6684. Many of his aquaintances avoid him because he is so garrulous.

✅ The correct answer is option C.
Proud : feeling deep pleasure or satisfaction as a result of one’s own achievements, qualities, or possessions or those of someone with whom one is closely associated.

Unreasonable : not guided by or based on good sense.

Talkative : fond of or given to talking.

Quarrelsome : given to or characterized by quarrelling.

Garrulous : excessively talkative, especially on trivial matters.

Synonym of Garrulous is Talkative