Boundaries: Punctuation and Sentence Structure

SAT Reading and Writing· difficulty 4/5

Mount Everest's summit reaches a staggering altitude ______ 29,032 feet above sea level.

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

  • A

    check_circle
  • B

    , being

  • C

    ; that is

  • D

    , and

Explanation

An em-dash properly introduces an emphatic amplification (the specific altitude). "; that is" needs a comma after; ", and" requires an independent clause; ", being" creates an awkward participial phrase.

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SAT Reading and Writing · Boundaries: Punctuation and Sentence Structure Practice Question | Acemy