Question #N664
The two main types of rock art found in this region are petroglyphs, which are images carved into the rock, and pictographs, which are images painted on the rock. Petroglyphs are often more durable than pictographs, but ______ can be more easily damaged by the elements.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. they
B. them
C. those
D. it
Correct Answer is: A
The pronoun "they" correctly agrees in number and person with its antecedent "petroglyphs." Choice B is incorrect because the pronoun "them" incorrectly refers to "pictographs." Choice C is incorrect because the pronoun "those" incorrectly refers to the "elements." Choice D is incorrect because the pronoun "it" incorrectly refers to "petroglyphs."