Polyvinyl chloride, or pvc, is used in most water-carrying pipes in the united states. known for their resistance to the corrosion that can be caused by water, pvc pipes are more durable than the metal pipes of old. as useful as pvc is, it may be surprising that it was accidentally discovered in 1835 by henri victor regnault, who observed a mysterious white solid plastic forming inside some test tubes that were left exposed to sunlight in his lab. it can be inferred from the passage that metal pipes:
a. are used more than pvc pipes outside of the united states
b. are more expensive than pvc pipes
c. are more likely to corrode than pvc pipes
d. are no longer used in the united states

In order really to hate white people, one has to blot so much out of the mind — and the heart — that this hatred itself becomes an exhausting and self-destructive pose. but this does not mean, on the other hand, that love comes easily: the white world is too powerful, too complacent, too ready with gratuitous humiliation, and, above all, too ignorant and too innocent for that. which sentence best explains how the use of parallelism in the excerpt supports baldwin's purpose? a. it proves baldwin's central idea by highlighting the obvious. b. it emphasizes the problems that prevent one from loving the white world. c. it explains why the white world is unable to replace hate with love. d. it enumerates the many ways of dealing with the white world.