Select the most appropriate option to fill in the blank.

I ________ walked down the stairs, careful to be as quiet as possible.

cautiously

The most appropriate option to fill in the blank is cautiously.

The word cautiously means to be careful or wary. In this case, the sentence is saying that I walked down the stairs carefully, so as to be as quiet as possible. This means that I was careful not to make any noise that would wake anyone up.

The other options do not make sense in the context of the sentence.

• Furious means to be very angry or upset.
• Neatly means in a tidy or orderly way.
• Orderly means following a regular or systematic order.