Question

1. ¿de que nacionalidad ____ (tú)?

o eres
o soy
o somos

Explanation:

In Spanish, the verb "ser" (to be) has different conjugations. For the subject "tú" (you, informal), the correct conjugation of "ser" is "eres". "Soy" is for "yo" (I), and "somos" is for "nosotros/nosotras" (we). So we need to choose the form that matches "tú".

Answer:

A. Eres