Final answer:
The term 'dander' refers to dead skin cells that have been shed, primarily from the epidermis layer of the skin.
Step-by-step explanation:
The term that we learned in discussion that means 'dead skin cells' is c) Dander. Dander generally refers to the shed dead skin cells from the outer layer of the skin, the epidermis. It is part of the body's natural process and is common in both humans and pets.
The epidermis contains keratin, which is a protein that helps in the formation of skin and hair. While keratin provides strength and resilience to these tissues, it is not synonymous with dander. You may also encounter terms such as melanin, the pigment that gives skin its color, and sebum, an oily substance produced by the sebaceous glands that helps to waterproof and lubricate the skin and hair.