What is incorrect about the following sentence? You see three times the effort is needed to move the heavier box. Question 6 options: a) interjection not set off b) nonessential phrase not set off c) already correct

I think its A

Explanation:

It's not C because this sentence is not correct.

And the sentence seems to be pretty simple already there's not really any extra information in it so it wouldn't be B.

Therefore it would have to be A.