Final answer:
Juanita's daily walking program, which has become a consistent part of her lifestyle for eight months, indicates that she is in the maintenance stage of the transtheoretical model of behavior change.
Step-by-step explanation:
Eight months ago, Juanita began a daily walking program that is now integrated into her lifestyle. This reflects the maintenance stage of the transtheoretical model. The transtheoretical model is a theory of behavior change that identifies six stages through which people go when changing a behavior: precontemplation, contemplation, preparation, action, maintenance, and termination.
Since Juanita has been consistently engaging in her walking program for eight months and has incorporated it into her daily routine, she demonstrates the maintenance stage. This stage is characterized by the continued commitment to sustaining the new behavior long term.