Correct Answer: A
Explanation:
The support for this choice is in the second
sentence, which states that in some countries,
toxic insecticides are still legal. Choice b is
incorrect because even though polar regions
are mentioned in the paragraph, there is no
support for the idea that warmer regions are
not just as affected. There is no support for
choice c. Choice d can be ruled out because
there is nothing to indicate that DDT and
toxaphene are the most toxic. Choice e is
illogical.