example 1: Voy a ser mejor alumno. Ser was used in this sentence because it means going to be and it makes sense in this context
(another example could be "Puedo ser eso?" if the first one isn't good enough)
example 2: Voy a estar en mi casa este sabado. Estar was used in this sentence because it can mean present but in most cases the future which would be "will be" or "going to" which makes sense in that context.
Sorry if this is bad I tried to explain it the best I could!
Answer:
D.Nos vemos en el restaurante
Explanation:
a.See you later
b.just for a while
c.sure
Entonces, ¿en qué quedamos? means "So What are we gonna do?"
Nos vemos en el restaurante means ¨"I ll meet you in the restaurant"
This might not make sense but is something would say if someone asks me that.(my mother tongue is spanish)
It means (rebels of texas)