We use the subjunctive to express desires, doubts, the unknown, the abstract, and emotions. As in the indicative, the subjunctive mood includes the same verb tenses, including the perfect, the past, and the future. So we can affirm three characteristics regarding the subjunctive:
1. Subjunctive sentences often have one subject in the main (independent) clause and one in the noun (dependent) clause. For instance: Yo quiero que tú laves los platos (I want you to do the dishes).
2. Subjunctive sentences often have parts linked by a relative pronoun (que, quien, como). For instance: Yo quiero que tú laves los platos (I want you to do the dishes).
3. Subjunctive sentences often contain a WEIRDO verb, that is, the acronym that stands for Wishes, Emotions, Impersonal Expressions, Recommendations, Doubt/Denial, and Ojalá. All these situations are likely to be used in the subjunctive. For instance: Yo quiero que tú laves los platos (I want you to do the dishes).
SO THE CORRECT ANSWER IS:
Luisa quiere que hablemos con ella
