For public speakers, they should always make a lot of （）to audience to see their responds—whether they are interested in the speech, whether they can understand, etc.（）

For public speakers, they should always make a lot of （）to audience to see their responds—whether they are interested in the speech, whether they can understand, etc.（）
A.facial expression
B.gestures
C.eye contact
D.posture
正确答案：eye contact