Question

Give me a new exchange student in your class how would you ask her about her nationality

A. Quelle est sa nationaliťe?
B. Quelle est ta nationaliťe?
C. Quelle est ma nationaliťe?
D. Quelle est la nationaliťe?​

Answer 1

B

Because if your her about her nationality. You would ask what is your nationality so 'ta' is the best option.

Answer 2

B. Quelle est ta nationaliťe?

B. What is your nationality?