Questions 4 to 6 are based on the following passage. We tend to use certain parts of our face to communicate certain emotions. For example, research tends to support the notion that our eyes and eyelids are the most accurate indicators of fear. When we are afraid, our eyes are wide open and we may look straightforward with a "blank stare" until the threat passes or we learn to control our emotions. Our eyes communicate through eye contact and mutual gaze. In public speaking, eye contact refers to looking at the eyes of the people in the audience. Mutual gaze applies to a more intimate communication encounter, such as when two people are in an intense conversation, sitting only a few feet apart and looking at one another. Eyes play different roles when we communicate with different people. For example, we can mentally regroup our thoughts when receiving communication from others by glancing away and pondering what has been said or how we want to respond. We can both send messages and control communication with our eyes. We are more apt to gaze at the other person when we have something important to say because we do not want to be interrupted and we want the other person to pay attention. Glancing away from the other person can also assist us in dealing with information overload — when too much information makes it difficult to comprehend the other person's message.