Final answer:
Option C: The newlywed couple shared their first dance at the wedding reception.
Step-by-step explanation:
The sentence that uses couple as a noun meaning a pair or a twosome is option C: The newlywed couple shared their first dance at the wedding reception. In this sentence, couple is used to refer to two people who are married or in a romantic relationship. It represents a pair or a twosome.
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