You need to write which ones are questions and which ones have an accent on the à
¿
Como re llamas?
Cuantos anos tienes?
Como estas?
à
Estàs
Cuántos
1. b. you use queria because if you say "quise" it means you stopped wanting to learn ballet sometime in the past.
2. b. you use conoci' because you've already met the professor in the past
The answer to this problem is B