The upper region of the dermis characterized by parallel rows of tiny bumps is known as dermal papillae. So the correct option is A.
Skin is the largest organ of the body. It protects against various agents including abnormalities of the temperature, germs, etc. It also helps in identifying the feeling of tactile sensations.
There are three layers of tissue that form the skin. These are
The epidermis cells are majorly made up of the protein keratin. The dermis layer is the thickest layer forming 90% of the skin. The hypodermis is majorly made by fatty tissues.
The dermis layer is richly supplied with blood vessels, connective tissues, sweat glands, hair follicles, etc.
It has two main layers. The upper layer is called the dermal papillae and the lower layer is called the reticular dermis.
Therefore the correct option is A.
Read more about skin layers, here
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