Which sentence uses prepositional phrases to convey meaning
a. our pets ate the mexican cornbread that was left out
b. our dog chester and a little kitten we named renaldo ate the mexican cornbread that we left out
c. a little kitten we named renaldo and our dog chester ate the mexican cornbread that we left out
d. the mexican cornbread left out on the counter was eaten by our dog chester and a little kitten we named renaldo

D. If you removed the prepositional phrases the point of the sentence (which was to convey that the pets ate the cornbread) would be negated.

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.