<span>The answer is letter C.<span>
<span>The
operative word for the sentence is exercise. The effect of developing good endurance
is caused by exercise. Exercises that are performed on a regular basis give
individuals many beneficial effects to health and overall development.
Individuals should at least exercise 30 minutes a day, 3-5 times a week in able
to reap the benefits that it could bring to the body internally and externally.
But before any training regimen, individuals should consult a physician to
ensure that the activities to be performed will be safe. </span></span></span>
Indoor pollution can be reduced by reducing the main causes of this pollution which are: avoid smoking indoor, reducing use of carpeted floors, proper ventilation, keep trash baskets covered, minimizing the use of air-fresheners and irritating perfumes, use exhaust fans. The outdoor pollution can be reduced by minimizing the use of vehicles whose burning fuel contribute a lot to outdoor air pollution, the chimneys of industries and factories should have filters fixed in so that harmful substances may not be exposed to air.
