PLZZZ HELP ME!! I RLLY NEED IT

Which of the following statements concerning cancer and mutations is correct? a: cancer can only occur with a mutation in a somatic cell. b: usually, multiple mutations are required in different genes to cause cancer. c: none of the other answer options is correct. d: cancer can only occur with a mutation in a germ cell. e: usually, a single mutation is all that is required to cause cancer.

What is the role of osteocytes, osteoblasts, and osteoclasts in bone repair?

Which of the following is a lifestyle behavior? a. getting enough sleep b. exercise c. tobacco use d. all of the above