<prompt> Marble bone disease is -OsteoporosisPagets diseaseOsteopetrosisOsteogenesis imperfecta  <response>: Ans. is c i.e., Osteopetrosis o Osteopetrosis is also known as Marble bone disease or Albers-Schonberg disease.o Pagets disease is known as Osteitis deformans,o Osteogenesis imperfecta is known as Brittle bone disease,o Osteoporosis is known as Fragile bone disease. 