Correct answer: B) Lipids
Lipids are that molecule, which contain hydrocarbon and is responsible for making the building blocks of the structure and function of cells.
Example of fats include waxes, oils, and vitamins such as A, D, E, and K.
The most important function of the fat inside the body is energy transformation and heat insulation.
The adipose tissue act as an insulator of the body by trapping the heat across the important organ of the body, they also provide cushioning to the organs and protect them from mechanical shock and damage.