A. subtle because they're basically making an analogy. For example, some people like cats, while others like dogs. In this case, some people like subtle flavors, while others like spicy hot flavors. Also, none of the other words make sense in the sentence because vivid is usually used to describe colors, universal is used to describe something people do all around the world, and delusional means that you are having thoughts or visions that contradict reality. So, A. subtle is the answer.
