D: The same amount of fats,oils,and sugar because if you only have fruits and vegetables then you can get sick with only food or only fruits
The circulatory system is very useful. This system transports the food nutrients, and oxygen to the body cells. It also delivers of carbon dioxide and waste products. This helps the respiratory system by transporting nutrients to keep the lungs clean, and healthy.
D. The petting animals option. Mainly because that answer has nothing to do with food and everything to do with regular germs :)
