Bile salts from the gall bladder mix with fats to futher break them down in a process called a. enzymatic reaction b. oxidation c. emulsification d. free radicalization

I think the answer is C. emulsification. 

When i look at this i get C emulification

Cotton with iron probably

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.