Question

Are the verb tenses in the sentence consistent, or do they shift unnecessarily? During the game, the coach dozes off, but he soon jumped back into action.

Answer 1

The correct answer is that the shift is unnecessary. 

This is correct because instead of the verb tenses complementing each other, it says that "During the game, he 'dozes' off but soon 'jumped' back."

It wouldn't be a shift if you used the form "dozed" instead of "dozes". The shift is unnecessary.

Answer 2

The correct answer is that the shift is unnecessary.