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

proud
unreasonable
talkative
quarrelsome

The correct answer is C. talkative.

Garrulous means excessively talkative. Someone who is garrulous talks a lot, often without thinking about what they are saying. They may talk about things that are not interesting or relevant to the conversation, and they may not listen to what others are saying. This can be annoying and off-putting to others, which is why many people avoid garrulous people.

The other options are incorrect because they do not accurately describe the meaning of the word “garrulous.” Proud means having or showing an excessively high opinion of oneself. Unreasonable means not able to be reasoned with. Quarrelsome means fond of quarreling or arguing.