Respuesta :
It is correct, the correct answer to complete the first sentence its estás, and the first word to make that sentence correctly written is cómo, in the word (cómo) its means How, to get an answer of what is the kind of mood the people is feeling, and the word (estás) is for the subject, in this case is to say it directly to the person you are talking to and must be a singular one, diferent of the (ESTÁN) spanish word for plural.
The correct answer is ¿cómo estás? In Spanish is an expression that we can translate as "How are you doing?" or "How are you?". It is a common expression used to say hello or used to start a conversation with someone, both written or verbal, no matter if you know the other person or not.