Which choice completes the text so that it conforms to the conventions of Standard English?
A
looked
B
looks
C
is looking
D
looking
Explanation
Correct answer: D.
Choice D is the best answer. The convention being tested is the use of verb forms within a sentence. The nonfinite present participle verb “looking” is correctly used to form a subordinate clause that describes the intent behind how L’Engle begins her novel.
Why the other choices are wrong
Choice A
Choice A is incorrect because the finite past tense verb “looked” can’t be used in this way to form a subordinate clause.
Choice B
Choice B is incorrect because the finite present tense verb “looks” can’t be used in this way to form a subordinate clause.
Choice C
Choice C is incorrect because the finite present progressive tense verb “is looking” can’t be used in this way to form a subordinate clause.