Answer:
There are at least two external conflicts at work:
man versus machine
parents versus children
either one works
Explanation:
An adverb phrase consists of words that are used to modify an adjective, a verb and an adverb. Among the given sentences above, the sentence that contains a clause that is used as an adverb is: I do not mind fishing, as long as I don't have to bait the hook. The correct answer is option D.