Tough. Choice (E) is correct.
You can tell by using the
contrapositive on both of these statements:
If not (prices fall as rapidly as/more rapidly than
competitors),
then not (production costs fall as rapidly or more ...
I don't understand how A is the principle. Here is my breakdown:
The use of space satellites to study the environment is important. Problems can be identified well in advance, so people can act early. It makes sense that environmentalists ...
I don't understand why D is correct. I chose B. Could someone please explain why the right answer is right and the wrong answers are wrong? Thank you in advance.