Question

......i come in.appropriate modals​

Answer 1

Answer:

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 D is the correct answer because it expresses politeness in asking permission, which suits in the given sentence.

Whereas, option A expresses an expectation that may or may not happen; option B expresses lesser possibility; and option C expresses certainty to make the job done on future.