Answer: eye contact is a dependent variable.
Explanation:
A dependent variable is a variable that is measured as well as tested in an experiment. It is what is being studied in an experiment. The experiment above is to show the effect of eye contact on children's smiling in an experiment. The eye contacts is what is measured and studied as a result, it is the dependent variable. The children's smiling is the independent variable.
The eye contact vary based on the children smiling. The dependent variable depend on the variation of the independent variable. The eye contact is the dependent variable which a person attempts to predict using the independent variable.