The following sentence is calling for: B. Active listening. As a general rule you don't skip review for a big test that could dramatically sway your grade in either a positive or negative direction and course. I hope that answers your question.
In communication, there are mainly two types of listening: active and passive. In passive listening, the listener is not completely engaged in the process of listening, does not answer to the message or make an effort to completely understand it or remember it. On the opposite, in active listening, the listener is engaged in the process of listening and makes an effort to get all the message, besides this, the listener has enough information to answer to the message. In the case of you teacher giving a review for a big test, active listening rather than passive is necessary because if you do not focus on the teacher's words you might not understand or remember the information of the review and this can affect negatively your performance on the test.
