Weight control is the primary benefit of exercise.
This is false because exercise isn't just for weight loss but also for overall health, such as good heart function.
By having a clean environment and make sure the food is in good conditions as well as following the proper instructions for the meal (ex. washing the fruits)
I'd say the most questionable source of health information is D. A health care professional because people are more of a reliable source than websites. A health care professional is also trained to do these certain things.
-rhear