(Estás) nervioso por la audición?
No, yo (estoy) muy tranquilo.
Answer:
A) sé
Explanation:
Yo sé donde vive.
I know where you live.
Both conozco and sé mean know but they are different. Conozco means to know someone, sé means to know something. In this case, you want to know something so sé applies to this sentence.
Tu falda es blanca pero aquella es rosa
1. The middle one
2. The first one