Final answer:
Chin's objective for her community nutrition program is missing a specific time frame for achieving the goal or measuring progress.
Step-by-step explanation:
The objective stated by Chin for her community nutrition program is missing a time frame. While the target population (women who are at least 60 years of age), the action (performing at least 30 minutes of weight-bearing exercise), and the measure of success (three or more times per week) are clearly specified, the objective does not provide a specific time frame for when the goal should be achieved or by when progress should be measured.