question 1 of 10\nbuenos días, señor díaz. ¿cómo está ________?\na. tú\nb. amigo\nc. usted\nd. tarea

Answer

Brief Explanations:

The sentence uses formal address ("señor Díaz") and the formal verb form "está". In Spanish, "usted" is the formal second-person pronoun that matches this formal context and verb conjugation. The other options are incorrect: "tú" is informal, "amigo" means friend, and "tarea" means homework.

Answer:

C. usted