Which sentence correctly revises the underlined
section in the passage?
from cooking to working out, having a pastime can
improve your health.
from cooking to working out; having a pastime can
improve your health.
from cooking to working out, and having a pastime
can improve your health.
from cooking to working out; nonetheless, having a
pastime can improve health.

The first sentence in the list of revisions is the correct sentence on the list. From cooking to working out, having a pastime can  improve your health.

Explanation:

This sentence has a prepositional phrase to begin with, "From cooking to working out," that is correctly followed by a comma which is obligatory to some style guides and authoritative sites like the Purdue Writing Lab because it is more than four words long. The main clause is "having a pastime can improve your health." This could function as a complete sentence on its own. The other options using the semicolon and the conjunction basically treat the prepositional phrase as if it where an independent clause as well, which it is not.  

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.

sorry, i just really need points. and to this question, maybe i know the answer. but i have no time now. d