Which of the following is an achievable outcome for a weight loss program?

The most appropriate outcome for a weight loss program is to reduce by 10% the number of obese adults, ages 25-49, within two years of starting the program. This outcome is realistic and measurable, as public health initiatives often focus on modifying population-level behaviors and health metrics over specific individual targets.

Achieving a reduction in the number of obese adults is a quantifiable goal that can reflect the overall effectiveness of the program in a community or demographic. It aligns well with broader public health objectives and recognizes that weight loss is a population-level challenge, which can be influenced by environmental, behavioral, and social factors.

In contrast, ensuring that all participants lose at least 20 pounds, guaranteeing no weight regain after one year, or achieving 100% participant compliance are all overly ambitious and not typically feasible objectives for a weight loss program. These goals may set unrealistic expectations for participants and do not take into account individual variability in weight loss responses or adherence to the program.