Answer:
a. Epithelial tissue is composed of cells and matrix.
Explanation:
Epithelial tissue is the tissue that protects the rest of the tissues inside of the organisms body, in this human´s case is mostly the skin and the components that form it, it is a different kind of cell that is connected to eachother and have protein conection that make it possible for the epithelial tissue to protect the organisms from radiation, desiccation, toxins, and physical trauma.
