Yes, it is true that fats are an essential part of a diet. The correct option among all the options given in the question is option "a". Fats are required because it helps the body to absorb certain types of nutrients as well. It also gets converted to energy whenever required. It also helps to absorb certain vitamins like Vitamin A and Vitamin D. It also helps to create certain kinds of fatty acids that the body cannot create on its own. Two kinds of fats are mostly found in the body and they are saturated and unsaturated type of fats.