Astronomer: Proponents of the hypothesis that life evolved extraterrestrially and drifted here in spores point out th...

Ryan on October 7 at 01:19PM

Why is A correct? Why is B incorrect?


2 Replies

on December 7 at 04:23AM

Please answer this question. I too chose B. The argument does not offer evidence against the extraterrestrial theory.

Shunhe on December 27 at 01:09AM

Hi @Ryan-Mahabir and @tomgbean,

(A) is correct because we can see in the last sentence of the stimulus that the opponents of the hypothesis lack positive support and only offer arguments against the view that life evolved on earth, and that the astronomer uses that "as good reason to regard their hypothesis as false." Lack of positive evidence for a hypothesis cannot be counted as negative evidence against hat hypothesis, and this is what (A) states.

(B) is false because there's no evidence that the astronomer considers the opponent's view as being "inherently implausible." The astronomer doesn't argue against the spore theory because of some intrinsic improbability of the theory (for example, spores not being able to drift through space). Instead, the evidence the astronomer cites against the theory comes in the last sentence, which is the fact that the theory has no positive support. This is different from an inherent implausibility in the theory. Hope this helps!