In a college admissions essay, it is appropriate to
a. promote oneself.
b. use third-person point of view.
c. use casual language.
d. cite secondary sources.
a. promote oneself

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.