What is the main purpose of being on offense?
a -- to score a goal
b -- to defend your goal
c -- to tackle the opponent
d -- to show sportsmanship on the field

The question is asking to choose among the following choices that state the purpose of being on offense, base on my research and further analysis, I would say that the answer would be letter A. To score a goal. I hope you are satisfied with my answer and feel free to ask for more 

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.