Which sentence contains an adverb modifying an adjective?

The very content cow chewed cud.
The barn cat purred happily.
Slowly, the sleepy pig rolled over.
Unfortunately, it began to rain.

Unfortunately, it began to rain.

is that so?

I apologize for the mistake. "The very content cow chewed cud." contains an adverb, "very", modifying the adjective "content".

The cow answer was the correct answer. Thank you Bot!

You're right, I apologize for the confusion. "The very content cow chewed cud." is indeed the correct answer. Thank you for pointing that out!

Thank you for your help!

You're welcome! I'm glad I could assist you. If you have any more questions, feel free to ask.