To determine which word pair is a set of antonyms, we need to understand the meaning of each word and compare them to find opposites. We can use a thesaurus to look up the meanings of the words if needed.
Let's break down each word pair:
1. Anxious, confident: Anxious means feeling worried, uneasy, or concerned. Confident, on the other hand, means feeling sure, certain, or self-assured. These two words have opposite meanings, making them a set of antonyms.
2. Eager, excited: Both eager and excited refer to a state of anticipation or enthusiasm. However, they are not necessarily opposites, as one can be both eager and excited simultaneously.
3. Worried, concerned: Worried and concerned have similar meanings, indicating feelings of unease, apprehension, or care. Though they can be used interchangeably in some contexts, they are not direct antonyms.
4. Depressed, sad: Both depressed and sad convey a state of unhappiness or low spirits. While they may have overlapping meanings, they are not opposites.
Based on these explanations, the word pair "anxious, confident" is the set of antonyms, representing opposite meanings.