Question

this layer of skin has no blood supply (avascular):
o hypodermis
o basement membrane
o subcutaneous
o epidermis
o dermis

Explanation:

The epidermis is the outermost layer of the skin and is avascular, meaning it has no blood supply. Nutrients and oxygen diffuse into the epidermis from the underlying dermis. The dermis has a rich blood - supply, while the hypodermis and subcutaneous tissue also have blood vessels. The basement membrane is not a layer of the skin but a structure that anchors the epidermis to the dermis.

Answer:

epidermis