Select the most appropriate ANTONYM of the underlined word.
The arrival of spring brings an ebullient feeling as flowers bloom and the weather warms.

The correct option is Weary.

Step-by-step explanation:

1. Analyze the underlined word:
The word ebullient describes a feeling or state of being cheerful, high-spirited, and overflowing with energy or enthusiasm. In the context of the sentence, the arrival of spring brings a lively and joyful feeling.

2. Identify the antonym:
An antonym is a word that has the opposite meaning. Since "ebullient" represents high energy and enthusiasm, we need to find a word that describes a state of low energy, fatigue, or lack of enthusiasm.

3. Evaluate the options:
• Deciduous: Refers to plants that shed their leaves annually or something that is temporary. It is unrelated to mood or energy.
• Clamant: Means shouting, clamorous, or urgently demanding attention. It does not mean the opposite of ebullient.
• Rude: Means discourteous, impolite, or roughly made. This is unrelated to energy levels.
• Weary: Means feeling or showing extreme tiredness, fatigued, or drained of energy and enthusiasm. This is the direct opposite of being ebullient.

Therefore, Weary is the most appropriate antonym for the word ebullient.