Cuboidal cells are roughly square or cuboidal in shape. Each cell has a spherical nucleus in the centre. Cuboidal epithelium is found in glands and in the lining of the kidney tubules as well as in the ducts of the glands. Cuboidal epithelium provides protection and mechanical support to organs, as well as the cells perform secretion and absorption. They also contain mitochondria to provide movement.
Therefore, the correct answer is option D.