Biology is the study of living things or organism. It is a science of life. And it is a great affect of human development because and humans possesses both genetic and environmental surroundings. Genes are the first inheritance in all creatures that effects the appearance or purpose of an organism in definite manner.
Speak clearly, eye contact is key, speak slightly louder then you would if you were talking to someone else.
I would say that C is the correct answer. It is true that exercise produces good feelings as well as promoting an increased body image and self-confidence.