When someone says “you have kept your room clean.”

  1. Thank you
  2. Sorry
  3. Excuse me


Thank you is used when a compliment is given. It is often used at the beginning of reply to an offer. It can be used in both the positive and the negative form to either accept or refuse an offer.

The correct answer is: Thank you

    Courtesy is the use of polite manners. Most people would define courtesy as 'polite behavior that reflects good manners and respect and kindness to others'. When someone says, 'you have kept your room clean', giving a compliment so, you should say thank you.