80 LR Two Question 12
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Permalink Submitted by Sohyun Kim on Apr 12 2018
Hello Dave
I chose the correct answer then while finding out why others aren't the correct answer I wonder why c isn't answer where is the proof?
Also, I think B is the answer if this question is Necessary assumption question, doesn't it?

Permalink Submitted by majorgeneraldave on Apr 15 2018
(C) is not the answer because there is no evidence as to what factors go into the cost of feeding a cat. It may be true, but it sure doesn't sound likely (and we certainly cannot prove it with this evidence).
I can imagine (B) as the answer to a Necessary Assumption question in an argument based on these facts. We'd need a different conclusion in order to find (B) necessary, though. The most likely would be something like "Thus, it's more expensive not to feed a cat dry food."