Question

Which of the following sentences uses an interjection correctly?

Umm: I'm not sure about the answer to that question.
Umm i'm not sure about the answer to that question.
Umm, I'm not sure about the answer to that question.
Umm I'm not sure about the answer to that question.

will give branlist

Answer 1

The third one is correct.

Answer 2

It’s not the first answer choice because most colons start a series or list, it’s not the 2nd or 4th because they are both run on sentences so it must be the 3rd answer choice.