Final answer:
Colm's behavior exemplifies d. persistence, as he maintains his fitness routine despite the loss of initial excitement. Carl's scenario is an example of extrinsic motivation, as he mows the yard for financial compensation.
Step-by-step explanation:
Colm's behavior BEST represents persistence in the context of reaching a goal. Persistence refers to the continued effort and determination to achieve a goal, even when it becomes challenging or when the initial excitement has faded. Colm is continuing with his fitness program despite the novelty wearing off and is having to find new motivation to maintain his activities, which is an indication of his dedication to his goal.
Regarding the second part, the motivation behind Carl mowing the yard of his elderly neighbor each week for $20 would be classified as extrinsic motivation. Extrinsic motivation is driven by external rewards or outcomes rather than the intrinsic pleasure or satisfaction one might get from an activity. In Carl's case, the monetary compensation serves as the external reward.