Both Lazarus's multimodal assessment framework and the transtheoretical model of behavior change help professionals determine:

The correct choice focuses on how both Lazarus's multimodal assessment framework and the transtheoretical model of behavior change provide professionals with insights to choose effective interventions for promoting healthy behaviors.

Lazarus's multimodal assessment framework emphasizes a holistic view of individuals by considering multiple factors that influence behavior, such as biological, psychological, and social dimensions. This comprehensive approach allows professionals to understand the individual’s context and tailor interventions accordingly.

Similarly, the transtheoretical model outlines stages of change individuals go through when modifying behavior, such as pre-contemplation, contemplation, preparation, action, and maintenance. By understanding which stage a client is in, the practitioner can select interventions that are more likely to resonate with the individual’s readiness to change, ultimately enhancing the effectiveness of the behavior change strategies employed.

Choosing the right interventions is crucial as it aligns with the individual's current mindset and circumstances, increasing the likelihood of successful behavioral modification. This connection between assessment and intervention selection is a fundamental aspect of behavior change strategies, making this answer particularly relevant.