The Adipose tissue helps endotherms maintain body temperature in cold weather.
WHAT IS THE ADIPOSE TISSUE?
Adipose tissue, commonly known as fat, can be found all over your body under your skin. It also can be found packed around muscles, within bone marrow, and in breast tissue.
WHY IS IT IN MY BODY?
Its main role is to store long-term energy. Think about it this way, if you're overweight, your body has captured a lot of energy that it doesn't really need.
C. Connecting with others
All the other choices would be detrimental.
Fingers, because people are usually messing with electricity and their fingers are by it.