8) Choose which underlined part of the sentence is the correct independent clause(s).

Organic foods are expensive, but the health benefits of eating organic foods may outweigh the expense since a person may eat less.
Organic foods are expensive, but the health benefits of eating organic foods may outweigh the expense since a person may eat less.
Organic foods are expensive, but the health benefits of eating organic foods may outweigh the expense since a person may eat less.
Organic foods are expensive, but the health benefits of eating organic foods may outweigh the expense since a person may eat less.