Match the heading to the short text.

Teens should be trained enough not to take part in the activities which are related to anti-social elements, and they must be taught certain morals and principles. Bullying should not be encouraged in any way in high schools and in colleges.

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