IF RIGHT Which of American adults do not exercise on a regular basis
40
50
55
60

50 for the age and for a percentage it's 60

Explanation:

"More than a quarter of Americans age 50 and older do not move beyond basic everyday activities, according to a new report from the Centers for Disease Control and Prevention."

"More than 60 percent of U.S. adults do not engage in the recommended amount of activity. Approximately 25 percent of U.S. adults are not active at all. Physical inactivity is more common among women than men."

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