A trained border collie is often more efficient than ______________________ at herding sheep into a pen.
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writingWhich choice completes the text so that it conforms to the conventions of Standard English?
A
human handlers
B
a human handler
C
the work of a human
D
handling
Correct Answer: B
Choice B is the best answer. The sentence compares "A trained border collie" (singular animal) to "a human handler" (singular person).
Choice A is incorrect because "handlers" is plural, which breaks the singular-to-singular parallel structure. Choice C is incorrect because it compares a "collie" to "work." Choice D is incorrect because it compares a "collie" to an action ("handling").