Question

Fill in the blank with an appropriate modal:
It's so nice here. I ______ stay here all day, but unfortunately, I have to go.

• A. may
• B. can
• C. could
• D. will

Answer 1

The correct option is C could

Modal Verbs show us the attitude of the speaker to what is being said or done. The term "modal" means expressing mood and mood is a way to express the attitude of the speaker

Option C is correct because it expresses uncertain ability which suits with the meaning of the sentence.

Whereas Option A expresses certain possibility.

option B expresses certain ability and option D expresses certainty in performance in future