Strengthen with Sufficient Premise Questions - - Question 23
Emil-Kunkin August 1, 2023
B doesn't completely fix the flaw here. The author is trying to prove that they are non native, and saying that many were probably brought by humans might slightly strengthen the argument, but it doesn't go far enough to prove it correct.
Emil-Kunkin August 1, 2023
Last sentence should be answer choice, not argument