Fats are an essential part of a diet.
a. true
b. false

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.

The question is asking about your own experience, so you should best answer about yourself.

But I can help you by providing my own example:

I know a general practitioner in the UK. (a  medical doctor that is not a specialist, but can be seen as a first contact doctor).

I asked her what happens to veins after an injury - if they can't be properly stitched together. She answered that while those vessels would eventually dissappear, the vessels next to them would grow bigger and compensate by providing more blood to the region.