Carmen hola manuel, te llamo para invitarte a un peque? o evento. (1) está está haciendo una fiesta para celebrar el aniversario de mis padres.

Hello there!

Here we want to complete the sentence "Carmen hola manuel, te llamo para invitarte a un pequeño evento. (1)  está haciendo una fiesta para celebrar el aniversario de mis padres."

Wich can be translated to:

"Carmen, Hi Manuel... I called to invite you to a smal event,  it's doing a party to celebrate the aniversary of mi parents"

Here the answer can be the person that is organizing the party; for example the sister of the brother, and sister is translated to "hermana" in spanish, so the whole phrase can be:

"Here we want to complete the sentence "Carmen hola manuel, te llamo para invitarte a un pequeño evento. Mi hermana está haciendo una fiesta para celebrar el aniversario de mis padres."

this question is given using the conditional form. conditional tenses are is used when talking about hypothetical situations and probabilities. also, this is used when making polite requests. so comprarías is the conjugation of the verb comprar that matches the second person singular in the conditional. finally:

¿cuál comprarías tú?