|Question 17Verbal

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Text
The Austronesian language family comprises some 1,200 languages—including the ______ Gilbertese and Tongan, which are spoken by 120,000 and 108,000 speakers, respectively—and accounts for one-fifth of the world's languages, making it of keen interest to linguists like Marian Klamer.
Which choice completes the text so that it conforms to the conventions of Standard English?
languages,
A
languages:
B
languages
C
languages—
D