Final answer:
The barriers to modifying poor health behaviors are lack of knowledge, lack of motivation, and peer pressure.
Step-by-step explanation:
The barriers to modifying poor health behaviors include:
- Lack of knowledge: Many people may not have access to accurate information about healthy behaviors, or they may not understand the importance of changing their behaviors.
- Lack of motivation: Some individuals may not have the desire or drive to make necessary changes to improve their health.
- Peer pressure: The influence of friends, family, and social groups can make it difficult for individuals to break unhealthy habits.
Therefore, the correct answer is d) All of the above.