Question

We walked together to the rehearsal hall.

Answer 1

Answer:

C. In the afternoon, we walked together to the rehearsal hall.

Explanation:

The italicised pattern is a prepositinal phrase. The prepositon in heads the pattern and the afternoon is the complement to the preposition. This prepositional phrase indicates time. It tells when the speakers -we- walked together.

Answer 2

C. In the afternoon, we walked together to the rehearsal hall

-"In" being the preposition.

Hope this helps!