Explanation:

- The sentence to fill in:

"My teacher asked me to keep _____."

- Option 1: quiet

This word means making very little or no noise. It's suitable in this context—when someone wants silence.

Correct Answer.

- Option 2: quite

This word is an adverb meaning completely or very. It doesn't fit here.

- Option 3: quaint

This word describes something attractively unusual or old-fashioned. It's irrelevant here.

- Option 4: quit

This verb means to stop doing something. It's not suitable in this context.