The correct answer is C. Explicit.
Obscure means not well known or not easily understood. Implicit means not directly expressed but implied or understood. Obnoxious means very unpleasant or annoying. Pedantic means excessively concerned with minor details or rules.
A word that is obscure is one that is not well known or not easily understood. For example, the word “esoteric” is obscure because it is not commonly used and its meaning is not immediately clear. A word that is implicit is one that is not directly expressed but implied or understood. For example, if someone says “I’m not happy,” they are implicitly saying that they are unhappy. A word that is obnoxious is one that is very unpleasant or annoying. For example, a person who is always complaining is obnoxious. A word that is pedantic is one that is excessively concerned with minor details or rules. For example, a person who always corrects others’ grammar is pedantic.
In the context of the question, the word “obscure” is being used to describe something that is not well known or not easily understood. The answer that best fits this description is C. Explicit. A word that is explicit is one that is directly expressed and not implied or understood. This is the opposite of obscure, which means not well known or not easily understood.