Due to its permanently frozen subsoil, the treeless region called "tundra" is a difficult environment for vegetation. The tundra is a cold, windy biome that covers much of the Arctic.
6
writingWhich choice most effectively combines the sentences at the underlined portion?
A
comprised of
B
tundra—
C
tundra; the tundra is
D
tundra, which is a place comprised of
Correct Answer: B
Choice B is the best answer. It uses an em dash to introduce the definition/description of the tundra, linking the two sentences smoothly.
Choice A is incorrect because "comprised of" is awkward in this context. Choice C is incorrect because it repeats the word "tundra" unnecessarily. Choice D is incorrect because "which is a place comprised of" is wordy and redundant.