Which behavior is an example of nonverbal communication? a. asking your neighbor in a library to turn down him music b. laughing at mime performing in the park c. nodding to let your parents know u understand their request d. whispering a story to your friends about your weekend

C. Nodding to let your parents know you understand their request

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.