PLZ HELP!!

Choose the correct form of the adjective to describe the following noun. las estudiantes.
a) triste
b) tristes

What does it mean to conjugate a verb? how do you conjugate verbs in spanish?

Escoge la conjugación en el imperativo del verbo entre paréntesis. usted (levantarse).

If you love salsa(not the visit where it originated and is also the island nation that looks like a crocodile. a. spain b. cuba c. argentina d. colombia