Re-write the sentence using double object pronouns.
le sirvo un té a la señora.

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?

1.) la ruta arqueologica

2.) la ruta artesanal

3.) la ruta paraiso artesanal  

4.) la ruta de las flores

5.) la ruta sol y playa

6.) la ruta de la paz