In this sentence:"It is unlikely that someone would see history as the working out of moral themes unless he or she held clear and unambiguous moral beliefs" The sufficient necessary relationship in this sentence is not understandable to me. Isn't the sentence after unless should be in the necessary part?

Why B —m→ C is stronger than B ←s→ C? And what does it mean it is stronger?

In this sentence, "Most large nurseries sell raspberry plants primarily to commercial raspberry growers and sell only plants that are guaranteed to be disease-free" raspberry plants and plants are not identical. raspberry is a smaller object than just object. But is it allowed to draw arrows from the same subject, "large nurseries" as the lecturer explained?

How do I solve this type of questions in less than 1 min 10 sec? It took me 2 min for me just to draw arrows… Afterward, when we get used to this type of questions, should we solve it without drawing arrows to save time?

I don't understand the answer. From my understanding, having an abnormality means the throat has been damaged. In this context, does 'abnormality' in medical terms mean it is something you were born with?

Can this sentence "No Jacksons are non-swimmers" be translated to this: Swimmers are Jacksons. My understanding is that /Jacksons -> /Swimmers can be represented as Swimmers -> Jacksons (Contrapositive).

I heard that there can be only 1 sufficient condition while there can be multiple necessary condition. Can this relationship be explained as a function with x and y? Like in function, there can be multiple inputs while there is only one output.

In the MSS questions, is it necessary to find the main conclusion in the stimulus like MC questions?

Can E be an answer if the question was weakening question?