Answer:
I want to play basketball but my dad says: You’re too small. You can’t play basketball.
Explanation:
La mujer está hablando por teléfono en el hotel
The second answer. Because “sus” is the only one which has the “s” because it is plural. If it would be “nuestro” it should had an “s” like “nuestros hijos son altos” or “tus hijos son altos”