Final answer:
Self-concept is the factor that helps in motivation for teaching an older adult and leads to long-term behavior change.
Step-by-step explanation:
The factor that helps in motivation for teaching an older adult and leads to long-term behavior change is self-concept. Self-concept refers to the beliefs and perceptions that individuals have about themselves, including their abilities, skills, and identity. When older adults have a positive self-concept and believe in their ability to learn and change, they are more motivated to engage in learning and behavior change.Adherence and compliance are also important in promoting behavior change, but they do not necessarily lead to long-term changes. Adherence refers to following instructions or recommendations, while compliance refers to conforming to rules or regulations. While adherence and compliance can be helpful in the short term, they may not necessarily lead to sustained behavior change.