The given correct answer "es" is likely a response to the word "buzz". "Es" is the Spanish word for "is", and it could be interpreted as a short response to the prompt "buzz". It is possible that the question was asking for a one-word response or a translation of the word "buzz" into another language, and "es" fits both of those possibilities. However, without more context or information about the question, it is difficult to provide a definitive explanation.