Which does the epidermis contain? a. hair follicles b. blood vessels c. sweat glands d. keratin

Its two main layers are the epidermis (outer layer) and dermis (inner layer). The epidermis has several strata (layers) that contain four cell types. Keratinocytes produce keratin, a protein that gives skin its strength and flexibility and waterproofs the skin surface.

Your answer is gonna be: Keratin.

option c is the correct answer.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.