Which of the following is an example of intrinsic motivation?

The correct answer is Playing a sport for personal enjoyment.

Step-by-step explanation:

To identify the correct option, let's understand the difference between intrinsic and extrinsic motivation:
1. Intrinsic motivation occurs when a person is driven to perform an activity for its own sake, out of internal satisfaction, interest, or personal enjoyment.
2. Extrinsic motivation occurs when a person is driven to perform an activity to earn a external reward (like money, grades, or praise) or to avoid a punishment/negative consequence.

Now, let's analyze each of the options provided:
- "Playing a game for the prize money": The driving force is a tangible external reward (prize money). Therefore, this is an example of extrinsic motivation.
- "Playing a sport for personal enjoyment": The driving force is the internal pleasure, fun, and satisfaction derived directly from the activity itself. Therefore, this is a clear example of intrinsic motivation.
- "Completing the homework to avoid being scolded by parents": The driving force is avoiding an external negative consequence (parental scolding). Therefore, this is an example of extrinsic motivation.
- "Studying for a test to get good grade": The driving force is obtaining an external evaluation or reward (a good grade). Therefore, this is an example of extrinsic motivation.

Thus, playing a sport for personal enjoyment is the only example of intrinsic motivation.