The telescope on the summit of Mauna Kea captures images of celestial bodies that are not _________ to the naked eye.

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writing

Which choice completes the text so that it conforms to the conventions of Standard English?

A

visible

B

visible to be seen

C

visibly seeable

D

able to be seen visibly

Correct Answer: A

Choice A is the best answer. "Visible" means able to be seen; it is the most concise choice.

Choice B is incorrect because "to be seen" is redundant with "visible." Choice C is incorrect because "visibly seeable" is repetitive. Choice D is incorrect because "able to be seen visibly" is wordy and redundant.