The correct option is B Cemented directly to one another to form a single layer
Simple epithelium is composed of a single layer of cells which rest on the basal lamina. These cells are cemented to one another. This epithelium lines the body cavities, tubes and ducts helping in diffusion, absorption, filtration and secretion. It is of three types: Squamous, Cuboidal and Columnar.
So, the correct answer is B.