Chandu used very ugly words against his kind uncle; he threw down the gauntlet before him. A. he abused and insulted him B. he threw the challenge C. he behaved as if he was very great and important person D. he put several conditions for negotiation E. he showed his readiness to leave the place

The correct answer is: A. he abused and insulted him.

The phrase “threw down the gauntlet” means to challenge someone to a fight. In this case, Chandu is using very ugly words against his kind uncle, which is a form of abuse and insult.

Option B is incorrect because it does not accurately describe the situation. Chandu is not throwing a challenge to his uncle, he is abusing and insulting him.

Option C is incorrect because it does not accurately describe the situation. Chandu is not behaving as if he is very great and important, he is abusing and insulting his uncle.

Option D is incorrect because it does not accurately describe the situation. Chandu is not putting several conditions for negotiation, he is abusing and insulting his uncle.

Option E is incorrect because it does not accurately describe the situation. Chandu is not showing his readiness to leave the place, he is abusing and insulting his uncle.