Which person would most likely experience intrinsic reinforcement?
a. Jane, age 30, who commenced her exercise program 2 weeks ago
b. pete, age 27, who started his resistance training regiment to increase muscle mass one month ago
c. alexis, age 49, who has been swimming for 6 months three times a week, to increase her cardiovascular endurance
d. Anna, age 54, who has a weight loss goal and has been walking three times a week for a month
Answer: C