Which sentence includes a gerund?

A. Nash has been swimming since he was five years old.
B. Graham learned to dive at the community swimming pool.
C. While swimming at the beach, Harper found a starfish
D. Swimming in the gulf is Finn's favorite summer activity.

1 answer

The sentence that includes a gerund is:

D. Swimming in the gulf is Finn's favorite summer activity.

In this sentence, "Swimming" is a gerund, functioning as a noun.