C. Chocolate contains many antioxidants.
Why? Because answer A is irrelevant to the idea of being healthy, while caffeine isn’t the best, it’s literally not as bad as things like Sugar, making that segment irrelevant to the topic. Answer B literally is the shortest for a reason… expense doesn’t matter when talking about being healthy.
Answer C is best, because it helps give a POSITIVE aspect to what she’s trying to convey, and if she wants her paper to address something like that, trying to persuade her audience with facts that sound appealing is crucial. “But isn’t A crucial, random person?” Yeah, it’s useful for those limiting caffeine, not those maintaining a healthy diet
