Which sentence contains an intransitive verb?

a. Ian sharpened his hockey skates.

b. Carla skates before school in the morning.

c. Our hockey team won the league championship.

d. Jenna chose Hector as her skating partner.

An intransitive verb doesn't require a direct object. A cannot be correct because, Ian sharpened what? His hockey skates. So that is the direct object, therefore the verb is transitive. C and D are the same case.

The correct answer is B, because the verb is intransitive as it doesn't need an object. You cannot answer - Carla skates what? No, it is just Carla skates.

I believe. Its A ask someone else just to make sure