Match the heading to the short text.

Social media networking is increasing nowadays, and it most commonly affects many teens. Youngsters can spend many hours on their laptops and smartphones accessing a lot of social media sites. Some of them affect negatively our teens. As a result, it may lead to teens' mental problems.

• THE BAD HABIT
• THEY SHOULD BE INTERESTED IN TEENS' ACHIEVEMENTS
• THEY SHOULD LEARN THEIR CERTAIN MORALS AND PRINCIPLES
• THE GREATEST CHALLENGE
• THEY ARE WORRIED ABOUT THEIR NUTRITION
• NUMEROUS PROBLEMS CAUSE HEALTH DISORDERS
• THEY HAVE TO HELP THEIR CHILDREN
• HEALTH PROBLEMS
• THE BAD EFFECT
• THEY ARE ALWAYS UNDER THE CONTROL