Every spring, the city hosts a marathon with thousands of participants; _________ many health experts have asked if running such long distances is safe for everyone.
3
writingWhich choice completes the text so that it conforms to the conventions of Standard English?
A
unless,
B
however,
C
therefore,
D
instead,
Correct Answer: B
Choice B is the best answer. The sentence contrasts the marathon's popularity with health concerns. "However" appropriately signals this contrast.
Choice A is incorrect because "unless" introduces a condition. Choice C is incorrect because "therefore" indicates a result. Choice D is incorrect because "instead" suggests an alternative.