Answer:
The first option does not include all the information. It does not mention that Anna enjoys her life of the farm. We can eliminate it.
The third option uses "and" to connect all three clauses. However, "Anna enjoys living on a farm" is not an addition to the chores she has to do, which makes the sentence sound strange. We can also eliminate this option.
The last option uses "when", which makes it sound as if she only enjoys living on a farm during the time she has to milk the cows and feed the chickens. This option is incorrect.
The best option is the second one. It connects Anna's two chores with "and". The "although" used for the remaining clause indicates that, even though Anna has chores, living on a farm is still enjoyable. It is the best revision, varying the sentence pattern, but keeping the meaning.
Explanation:
