You are participating in a local psychology experiment. The research assistant asks you to hold two pencils in front of you and touch the eraser tips together. She then asks you to do this with one eye closed. You find this terribly difficult, which demonstrates the importance of:

Binocular Cues

Explanation:

Binocular cues are information visually obtained when the two eyes of humans are open and can see. The visual information is processed by the human brain in order to enable humans perceive distance or depth.

One of the importance of binocular cues to humans is that it helps us know the steepness of a hilly path when climbing. It also helps sportsmen like footballers to know how close or far-off an incoming ball is.

answer: the correct answer is b. an essay that connects the writer's experience with a topic of significance and of reader interest.

explanation: the key words are here "personal experience" since personal essays give insights about peoples' experiences in life and introduce us in their unique world that can be or not to related to our lives but interests us because we are human beings and share the same condition universally.  

the correct answer can either be a or b because it could be both but you should probally choose b