Answer:
B. Vivian takes careful notes while Gabe is talking
Step-by-step explanation:
If she refrains from asking questions then she either doesn't have any or she isn't listening. If she nods her head she could just be getting him to think she is listening so he stops talking. When people look away while someone is talking that most of the time means something else has their attention. If she is taking careful notes then she is trying to make sure she is going to do what he is asking.