Answer:
B
Explanation:
Letter B:
It has more grammar and it's professional. Sorry if I'm wrong but I believe it's B!
I would say the answer is d but I am not positive.
The simple subject is hours, because the simple subject of a sentence is typically only one word and is the simplest form of who is doing the verb. The complete subject would be "Twelve hours" because it includes all adjectives.
A good way to know whether there is an infinitive is to see whether there is the word "to" in the sentence.
So b. and c. are good candidates.
in C. however to is not part of the verbal phrase:
so the correct answer is b: and the infinitive is <span>to listen</span>