In which sentence is the word sleeping a gerund?

AMy cat's favorite pastime seems to be sleeping.
BIf we make too much noise, we'll wake the sleeping baby.
CWe were sleeping peacefully in the tent when the owl's sounds frightened us.

Verified Answer :

The correct answer isĀ A. My cat's favorite pastime seems to be sleeping.

That is because in this case the gerund sleeping works as a noun, functioning as an object.

The correct answer to the previous question is "C". According to English Grammar, whenever using the Past Continuous Tense, also known as Past Progressive, we must comply with the following grammatical structure: past tense of to be (was or were) followed by the gerund of the main verb (e.g. to sleep, sleeping).