Boundaries: Punctuation and Sentence Structure

SAT Reading and Writing· difficulty 2/5

To prepare for the simulated Mars mission ______ the crew lived for a full year in a sealed habitat in the Utah desert.

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

  • A

    :

  • B

    ;

  • C

    ,

    check_circle
  • D

    (empty)

Explanation

The infinitive phrase "To prepare for the simulated Mars mission" introduces the main clause and is followed by a comma.

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