Answer:
Aquí debería haber un texto, ¿dónde está?, no lo has puesto.
Answer:
i think it would be cuando which is B.
Explanation:
if you use cuando it would be "cuando es tu cumpleanos.
Hey there!
It would be:
El dia de la independencia.
Hopefully this helps!
(Translates to the say of the independence, or independence day).