Drive-reduction theory is largely derived from the biological concept of __________

A major part of adolescence is the development of a self-image and a perception of one's unique and individual characteristics. This is referred to as one's ___________

A) popularity B) ego C) personality D) identity

What is one reason douching does not prevent pregnancy?

A) Because sperm are sticky and cannot be flushed away B) Because sperm are traveling toward the uterus in fifteen seconds; douching is too late C) Because sperm has a pH value opposite to douches D) Because a woman's immune system protects sperm