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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?

5:30 in the video explanation answers this question.

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.

Helpful, thank you. One thing I'm wondering about is if the validity changes if we were to say "the overwhelming majority of people who have not received such classical training cannot recite Musetta's Walz". I assume it's still invalid, but brings us closer to the intuitive answer that if you meet someone who can recite an obscure classical piece they likely received some classical training. thoughts?

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?