When the two experts reviewed the bridge's structural integrity and proposed different solutions, the architect and the civil engineer both believed _________ calculation was correct.

6
writing

The underlined portion makes the sentence ambiguous. Replace it with the choice that best reduces that ambiguity.

A

his

B

hers

C

the other's

D

the one's

Correct Answer: C

Choice C is the best answer. "The other's" clarifies the distinction between the two experts' opinions.

Choice A is incorrect because "his" is ambiguous. Choice B is incorrect because "hers" introduces an unspecified gender. Choice D is incorrect because "the one's" is non-standard phrasing.