Paul's doctor says his cardio fitness level is excellent, but she still worries about his muscular fitness. Out of the activities he enjoys, the best one to improve his muscular fitness will be gymnastics. Gymnastics is a great sport and is proven to be extremely taxing on a persons muscle system. The correct answer will be A.
They both store energy but lipids are long term storage while carbohydrates are short term which means they get burnt first and then the lipids are used.