Select the option that expresses the given sentence in passive voice.
"You must send applications to the university before December 30."

Explanation of the Correct Answer:
· The given sentence is in active voice:
· Subject (You) + Verb (must send) + Object (applications to the university).
· When converting to passive voice, the object "applications" becomes the subject.
· The correct structure is:
· "Applications must be sent to the university before December 30."
Other options:
· (a) "Applications has to be sent" → Incorrect because "Applications" is plural, so "has" should be "have."
· (b) "Applications were to be sent" → Incorrect because "were to be sent" implies past obligation, while the original sentence is in present/future.
· (d) "Applications are to be sent" → Incorrect because "are to be sent" changes the modal verb "must" to a less forceful obligation.
Thus, the correct answer is (c) "Applications must be sent to the university before December 30."