Answer:
The amount of time spent with friends is a third-variable problem.
Explanation:
Third variable problem is a term that describes a type of mix up or confused conclusion where by, third variable leads to a confound causal relationship between two other variables.
In this case, June found that social media use is actually not associated with the feeling of loneliness, because the third variable is actually the cause or have the direct relationship to the feeling of loneliness.
