Question

Which phrase correctly completes this conversation?

Answer 1

The answer is: yo peso sesenta y tres kilos.

Answer 2

Yo peso sesenta y tres kilos.
"I weight sixty-three kilos."

This is the answer becasue Juan is asking YOU "How much do you weigh?"

So you respond with the yo (I) form. "Yo peso"

Not the you (Tú), not the they (Ella) not the he (Él)

Hope this helps. 

Answer 3

Which phrase correctly completes this conversation?

Juan: ¿Cuánto pesas?

Pedro: _________ sesenta y tres kilos.

A.
Él pesa
B.
Yo peso
C.
Tú pesas
D.
Ella pesa