I understand andyevans000's explanation quite well, and I can see why D is the right answer because of his explanation. However, I am confused as to why, instead of taking the contrapositive of the conclusion, we could not have also taken the contrapositive of the premise that "Technocomp will ...

Is (c) wrong because it's a sufficient assumption?

Is (E) wrong because we can't conclude anything about independently-owned pet shops that don't sell tropical fish, or because we only know that independently-owned pet stores don't sell gerbils?

Thanks!

Is (D) wrong for the additional reason that the actual distance of the stars should be fixed, so in reality it wouldn't differ between when the earlier estimates were taken and when the astronomer made his estimates?

I'd say (D) is wrong because it makes the argument solely about small children, whereas in the actual argument, they're just part of the reason pesticides are unacceptable. ("Others, including small children...") This argument is about pesticides being problematic for everyone , not just ...

I have a quick question. For answer choice (A), what is the logical opposite of "will"? Is it "will not" or "might not"? I understand why (A) is wrong for the reason given by patrick, but I'm trying to work through the negation of this AC as well.

Thanks!