Which of the following sentences could take the place of:

ustedes compraron un regalo para ellos.

los lo compraron.
se lo compraron.
se les compraron.

What groups of species are alive, eukaryotes, symmetrical, have backbones, and are tetrapods? (didn't mean to put spanish)

Does anyone know what my spanish teacher means by this? i need to use plural forms of the verb ser. and she asked me to use a couple of adjectives to describe the boys collectively and then the girls collectively?

¿dónde está el dormitorio? a. el dormitorio está a la izquierda del baño. b. el dormitorio está junto a la cocina. c. el dormitorio está a la izquierda de la cocina. d. el dormitorio está a la derecha de la sala de estar