Where is the adipose tissue found? the epidermis the dermis the hypodermis a and c all of them?

Adipose tissue while you can find it in all layers (I can go into the entire physiology if you want), it is more concentrated naturally and also is more correct by your class standards in the hypodermis. The hypodermis is the lower layer of the skin, and is used mainly to store adipose tissue (fat) as a way of conserving heat, and as a way of extra energy via Anaerobic processes, should it be needed. 

Option C, Carbon

Explanation:

Carbon is the most abundant non metal found in all organic matter. Be it protein, carbohydrates, fats, DNA, lipids or any any other organic compound, all have either simple or complex structures comprising of carbon molecule as a major building block.

In terms of organic chemistry , any molecule that has carbon as  a central element along with several other elements such as hydrogen , nitrogen , phosphorus etc is an organic compound. Carbon is a versatile element and is able to form four covalent bonds. These properties make it more preferable element for organic substances.

Hence, option C is correct