SAT Question 80aa7690: Boundaries answer and explanation

English - Boundaries - No Punctuation Within Clause
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The Austronesian language family includes Tagalog, Malagasy, and some 1,200 other languages throughout the Pacific, making it one of the largest language families in the world and of keen interest to ______ of the University of Toronto.
96
Difficulty:Hard
Which choice completes the text so that it conforms to the conventions of Standard English?