The correct option is A Odontoblasts
Ameloblasts are the cells that deposit tooth enamel. Odontoblast is a cell which is a part of the outer surface of the dental pulp. It is present in the vertebrates. Its biological function is the formation of dentine.Also it lines the pulp cavity. Osteoblasts are the cells that form new bone cells. Chondroblasts are the cells that form the chondrocytes (cells of the cartilage).