So, why is the answer to this might, and not could?

A, C, and D could theoretically work. B doesn't make logical sense. Without more context it is not possible to give an unambiguously correct answer. This test you've been posting questions from sucks eggs, but based on the pattern of the questions/answers you've posted previously the answer I'm guessing is going to be A, because the theme here is technically correct answers that aren't really how most English speakers generally speak.

I love me some questions with no context whatsoever, HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHHHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA

Might and could both express possibility. But could relates more to conditional ability. In your example, I think might is a better choice, because it is a possibility that you'll react positively since you're getting the proper assistance

Might

Might expresses that there's a good chance you'll pass, but "could" also works. I don't know why but "might" just sounds slightly more natural here. Maybe it's because "could" implies that things are more in your control whereas "might" implies they're moreso left to chance. Also, I would use "on my first attempt" instead of "in my first attempt".

Could is a little bit more definitive than might. Could *could* work here too, but given the context, it’s a little bit too sure of itself. Might is more of a  ”maybe“ here. I mean when when I think am well prepared for a test, I still feel like I ”might“ pass it.  Edit: the more I think about it, the more could also makes sense lol. I agree with the other commenter that this test sucks

Because *could* suggests more certainty. Could/can is about ability; might/may is about possibility. In this sentence, saying “I could pass” suggests you’re sure you would be able to pass on your first try [note: it doesn’t precisely mean you have 100% certainty, but the implication leans more towards being sure] if you have the correct training, while “I might pass” means you think you have a chance but you’re not sure that having the training will guarantee that you’ll pass. To be honest it’s a classic English learning question that doesn’t have just one correct answer, but that’s probably the logic behind “might” being tagged as correct here

Neither of those is the correct answer. I will do it. If you deprive me of will, then fine. With the proper support, I shall pass the test on the first attempt. The lack of confidence expressed here is appalling. "Could" is better than "might" because "could" means that the support makes success possible. With "might" success is possible, but it lacks the confidence of "shall" and doesn't convey how much the lack of proper support prevents success the way that "could" does.

Why the fuck is it talking like we're in the medieval ages?

Could because the probability of passing is increased.

As someone from the east coast of the US, I would say either C or D could be correct, depending on what you wanted to convey. To me, 'could' implies more confidence, 'might' implies a chance, and 'shall' is technically usable but not spoken where I'm from.

E. might be able to

Both “could” and “might” work in the sentence. Generally, “might” sounds better and likely integrates into the sentence more effectively.

All four of those are grammatically correct. B would be an unusual thing to say, but in the right context it’s still perfectly valid. This sub is teaching me that there are a LOT of really dumb English tests out there in the world.

Could has confusing tense implications here. Basically it is past tense while not referring to the past. Since the sentence is "if I get..." then it would be "then I can...". Could would need to be "if I got... then I could..."

IMO, "might" is generally seen as more formal than "could", so I could see it being taught as more correct. It's like when a child in school asks a teacher "Can I go to the bathroom?" The stereotypically (and probably outdated) response is for the teacher to mockingly reply, "*May* I go to the bathroom?" in an attempt to correct the child's grammar. In everyday speech, in my experience, "could" would be way more common in this kind of construction; "might" would be seen as overly formal and stuffy. "Required assistance" also seems overly formal, so I guess it fits. Also, I've never heard anyone use "in" in that type of construction. I would use "on". If I were to say this in a less stuffy style, I would say, "If I get the help I need, I could pass the exam on the first try." Edit: So basically, for your tests, you may want to consider using "may" and "might" where they would be synonymous with "can" and "could", but just know that in informal speech, in my experience, at least, the trend is the opposite.

They all work grammatically, could sounds the most natural and logical for the context, and can not (while also btw one word “cannot”), just doesn’t make any logical sense even thought it is grammatically correct, just you wouldn’t say that cause getting assistance for the test makes the test easier and therefore would be counterintuitive to the point

again, all of the answers fit, so this question clearly has missing context. The difference between "might" and "could" here is honestly dependent on inflection. Given that the answer isn't in italics, I would say that the difference is that "could" is more committal to the positive outcome. "if X then probably Y" whereas "might" is more wishy washy, "if X then maybe Y". Edit: It should be noted that whilst B is grammatically fine, as others say, it does not follow logically (although would be fine if "even" was added before "if").

I would definitely have picked “shall”, don’t see why it isn’t a legitimate answer

It's a bad question Ignore it.

Either is ok, but *could* sounds potentially overconfident. Grammatically it’s fine. Same goes for *shall*.

I wouldn’t trust these materials just on the basis that “in” is far, far less natural than “on” in this case.

I'm more concerned by the choice of preposition. "in the first attempt"?