Which sentence uses an adverbial clause to add variety and interest to its meaning?

Which sentence uses an adverbial clause to add variety and interest to its meaning?
No one knew what the theme of the dancing contest for next year would
be.
The emcee, along with the school principal, announced the theme for next
year's dancing contest.
After all the confetti had fallen, the emcee announced the theme for next
year's dancing contest.
The contestants in the dancing contest listened to the announcement of
next year's theme.
View Passage I Disable Passage Scrolling
Doad the
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