Oni is investigating different fitness plans available to her on the internet. Which fitness plan meets the recommended amount of physical activity per week?

A. 3 days of running 30 minutes, 2 days of walking 30 minutes.
B. 3 days of 45-minute HIIT classes.
C. 5 days of swimming laps 20 minutes.
D. 3 days of weightlifting 20 minutes, 2 days of 30-minute Zumba classes.

The fitness plan that meets the recommended amount of physical activity per week is option A. 3 days of running 30 minutes, 2 days of walking 30 minutes. This plan includes a total of 5 days of physical activity for a duration of 30 minutes each day, meeting the recommended amount of physical activity per week.