"internet use disorder" is not in the dsm-5, but if it is included in the next edition, a research-based estimate of the percentage of people in the united states who would fit the diagnostic criteria would be about:

I believe the answer is: 1%.
Internet use disorder refers to a form of psychological disorder that characterized by addictive behavior for using internet.
Even though the name sound less serious, it could most likely damage the victim's ability to form a real human connection with other people that would negatively affect their future.

The answer should be a.