Right answer
b. A mis padres, les gusta la comida latina, pero no pueden cocinarla.
This sentence use the concept of Indirect Object that is the person, animal or thing that receives the action of a verb, that is, the recipient of the direct object. So les is the indirect object pronoun used here that stands for the third person plural since mis padres (my parents) receive the action and this stands for the third person plural, that is, mis padres can be replaced by ellos. So Emily's parents love Latin American food, but they can’t cook it.