What is an example of "internalizing problems" that results from overcontrol of emotions in early childhood?

The examples are "Anxiety and depression".

Internalizing behaviors are those negative practices that are centered internally. They incorporate frightfulness, social withdrawal, and physical grievances. As opposed internalizing behaviors, externalizing practices are coordinated outward toward others. Harassing, vandalism, and illegal conflagration are cases of externalizing behaviors.

a is the answer because it just is

the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.