Which best describes a reason in an argumentative text?
O Areason proves a claim is true.
O Areason explains a position.
O Areason states a belief or opinion.
O A reason argues for someone's belief.

it is either the first or second one. I think it is the first one

some sort of sound device i believe.

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.