Erik Erikson’s theory explains: Select one: a. Why Rhesus Monkeys preferred terry cloth maternal stand-ins versus the maternal stand-ins that provided food. b. How human sexual desire is linked to the development of a personality. c. When human moral development begins in an individual. d. How the actions of society help shape personalities throughout the eight basic stages of life.

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.