The correct option is D Makes our teeth strong and healthy
∙ If we do not keep our mouth clean, germs may attack and cavities will develop in our teeth. It also results in tooth decay and bad breath.
∙ Keeping our mouth clean will help us to get rid of such germs and make our teeth strong and healthy.
∙ We must take care of our mouth and must rinse it with water before and after every meal.
∙ We must also brush our teeth twice everyday.