SAT Reading & Writing · Boundaries

The lighthouse's original lens ______ removed for restoration in a distant workshop ______ will be reinstalled in time for the site's…

The lighthouse's original lens ______ removed for restoration in a distant workshop ______ will be reinstalled in time for the site's bicentennial celebration.

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

Answer and explanation

Answer: A: , ... ,

"Removed for restoration in a distant workshop" is a supplement sitting between the subject "the lighthouse's original lens" and the main verb "will be reinstalled," adding background without being essential to the sentence's core claim. A mid-sentence supplement needs a comma at both the start and end. A supplies both; the others leave the boundary incomplete or absent.

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