Respuesta :

Felicidades en tu cumpleaños! Espero poder acompañarte en tu fiesta y que también te guste el regalo que te daré. Que cumplas muchos más!
Frase empleada para dar felicitaciones.

Translation:
A phrase used to give congratulations.

The options:
a. ¡el cumpleaños! - "the birthday!" 
b. ¡feliz cumpleaños! - "happy birthday!"
c. ¡el regalo! - "the gift!"
d. ¡la fiesta! - "the party!"

The first option does not make much sense; in what scenario would you congratulate someone by saying "the birthday!"? That option can be eliminated. The second option makes sense - it is appropriate to give someone good wishes on their birthday by saying "happy birthday". The third and fourth options make just as much sense as the first one. It's clear the answer is option b.

Answer:
b. ¡feliz cumpleaños!