The chemical reaction of the unstable compound was more volatile than ______________________.
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writingWhich choice completes the text so that it conforms to the conventions of Standard English?
A
the stable solution
B
that of the stable solution
C
those of the stable solution
D
solution that was stable
Correct Answer: B
Choice B is the best answer. The sentence compares the "chemical reaction" (singular) of one compound to the reaction of another. "That of" correctly replaces "reaction."
Choice A is incorrect because it compares "reaction" to a "solution." Choice C is incorrect because "those" is plural. Choice D is incorrect because it compares "reaction" to "solution."