Could someone me with part d, you

Which of these expressions is the most casual way to greet a friend

Your friend miguel calls his mother from your house to give her an update on his plans for the day. just from listening to his side of the conversation, you realize that his mother has lots of questions. what does she ask him, based on miguel's answers? choose the correct question in the list for each item. you will hear each set of statements twice.

How might someone answer the following question? ¿cuándo vamos a la biblioteca? a)voy el martes. b)vas el martes. c)vamos el martes. d)va el martes.