The correct option is D hard and non-pliable
Bones are specialized connective tissues with hard and non-pliable matrices. Bone forming cells are called osteoblasts. Bone destroying/ remodelling cells are called osteoclasts. Cells of the bone tissues are called osteocytes.
Cartilages are specialized connective tissues with flexible and slightly pliable matrices. Most embryonal cartilages are replaced by bones in adults. Cells of the cartilage tissues are called chondrocytes.