Happy to address the questions!
Mkarimi73, you write:
We can eliminate A, C, D, and E because they aren't even triggered conditionals, correct?
The question stem asks us to identify something that is present in one of the passages but not the other. For answer choices on this type of question, it can be helpful to put an "A" and "B" next to each answer choice, or each answer choice that remains a contender after skimming them. We're specifically asked about something present in B, but not in A.
From that perspective, there can be a variety of reasons why an answer choice fails, which is to say these answer choices aren't triggered conditionals if I understand what you mean correctly. An answer choice might mention material not present in B at all, or it might mention material in A but not in B, or material in B that is also in A, or material that is in neither passage. All of these variations would be incorrect.
Goingslow, you ask:
I'd greatly appreciate an explanation of how (D) fits with passage B. The sufficient condition seems triggered, but what about the necessary condition?
Answer choice (D) states, "If a concept can be expressed more exactly in one language than in another language, then it is likely that the concept was created by those languages." I understand your mentioning the sufficient condition being triggered to mean that we can find the first half of this sentence, treated as a statement, within Passage B. For example, Passage B discusses how different languages may be related to different abilities in numerical reasoning.
However, I don't see Passage B additionally making a claim that its example of differences in numerical reasoning is meant to imply that "the concept was created by those languages." Rather, on this front the author leaves open a few possibilities, proffered at the end of the passage: "Thus, the reports suggest that learning number words either creates a concept of exact numerical equality (a strong Whorfian hypothesis), or mediates the expansion of such a concept (a weaker Whorfian hypothesis), or directs attention to such a concept (a non-Whorfian hypothesis)" (lines 58-63).