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this one didn't even need to read beyond A lol, was classic suff/nec flaw i feel like should be 2 star question no?

The explanation for why A is wrong seems off to me. The most compelling reason for why A is wrong is simply that is doesn't explain the decrease in beak size over time, which is the core phenomenon we're trying to explain. It only says that, irrespective of time, captive birds (may, with some assumptions) have smaller beaks than wild.

Am I mistaken or does "some students" imply at least 2, not at least 1 students? The quantifier does NOT say "some of the students", it says some students, as in a plural amount. If it was one student it wouldn't fit, right?