Can you help me with this question please :(

Place the steps tor the formation of the enzyme pepsinogen in correct order

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

In general, are there any major differences that you can see? explain