http://classic.7sage.com/lsat_explanations/lsat-20-section-1-question-06/
I understand why the answer (D) is correct, but not sure why the answer choice (C) is incorrect. Is it because the answer choice makes an assumption that natural nesting sites will be less crowded than the nesting boxes? I thought this can be a logical conclusion from the passage rather than just assumption. Please explain me why (D) is a better answer choice than (C).