1. how would you use proofreading marks to correct the following sentence?
the transamerica pyramid is a building in san francisco it is shaped like a pyramid
"
the transamerica pyramid is a building in san francisco it is shaped
like a pyramid.
b. the transamerica pyramid is a building in san francisco it is shaped
like a pyramid.
the transamerica pyramid is a building in san francisco it is shaped
like a pyramid
od the transamerica pyramid is a building in san franciscoit is shaped
like a pyramid

explanation:

it's important for any number of settings.   but then i'm a retired teacher and my view may be biased.

it certainly will not weigh as a minus when applying to a college, while poor grades always work against you.

other factors are important like what you do to improve the community.  

where exactly is the sentence

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.