Final answer:
To achieve or maintain weight loss, 150 to 300 minutes of moderate-intensity activity each week, or 5-7 days of exercise, is recommended by health guidelines.
Step-by-step explanation:
For those looking to achieve or maintain weight loss, it is recommended to complete 150 to 300 minutes of moderate-intensity activity most days per week. According to the 2018 Physical Activity Guidelines for Americans issued by the Department of Health and Human Services, this roughly translates to about 2.5 to 5 hours per week. Therefore, the correct answer to the student's question is: B) 5-7 days per week for a moderate exercise program.
An effective moderate exercise program typically includes activities where you can talk but not sing, such as brisk walking, water aerobics, or cycling on flat terrain. It is also recommended to incorporate muscle-strengthening activities involving all major muscle groups on 2 or more days per week, which can further enhance health benefits and assist in maintaining weight loss.