Which sentence uses subjective language? O For research purposes, scientists classified walking as moderate exercise and running as vigorous exercise.
O Running, swimming, and bicycling are aerobic exercises.
O Walking doesn't exercise the heart as well as running, swimming, and bicycling, but it's still a worthwhile activity.
O Department of Health and Human Services guidelines suggest getting 75-150 minutes a week of aerobic exercises, such as running, swimming, and bicycling​