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.  

animal farm, written by george orwell, is a representation of russia after the revolution that led stalin to take over power.

in this excerpt, the central idea seems to be that the animals (a representation of society), when they believe to be working for a greater good and equality, are obedient and productive. they were convinced that, after expelling the owner (jones) from the farm, they would live in harmony and be fairly treated.

as we know, the pigs become the leaders and grow more selfish and dictatorial with time. in the end, they look and act in a way so similar to humans that it is impossible to tell the difference. the ideals of equality are shattered, and the farm turns out to be worse than it was before. the animals are manipulated with false propaganda and forced to work in order to enrich the pigs.

- the heat nearly killed them that first summer.