A tumor is an abnormal mass of tissue, which doesn't necessarily mean that you have cancer. Tumors can be benign, not cancerous, or they can be malignant, pre-cancerous. Another name for a tumor is a neoplasm.
I think it’s A (students often walked or rode bikes to school).
Going to movies, dances, or other events in a group is a good idea for teenagers because, all of the above.
All of the options listed are positive effects towards the teenagers, which make them safe in the situation. Going out with friends does remove the expectation of sexual activity, can reveal a lot about a person, and allows others to get to know each other.
Answer: because people have a poor perception of their image.
Explanation:
People who develop an eating disorder such as anorexia and bulimia are people who have low self-esteem. They look in a mirror and do not like what they see of themselves, so they resort to extreme eating behaviors to achieve what they call "ideal weight."