Final answer:
The final step in a behavior modification program is to evaluate results. This evaluation assesses the outcomes and processes, contributing to improvements in future interventions and behavioral changes.
Step-by-step explanation:
The final step in a behavior modification program is d) Evaluate results. Evaluation involves a systematic investigation of program outcomes and processes. It provides feedback for those aiming to improve behaviors and quality of life, identifies areas in need of improvement, and recognizes success. The use of program evaluation strategies based on the principles of social science methodologies ensures the efficacy of community-based interventions, allowing change agents or interventionists to see the impact of their work and guide them in making necessary adjustments.