Which statement best describes the skeletal system?   a the skeletal system is composed of bones, cartilage, tendons, and the muscles that connect them. b the skeletal system is a system of cartilage that supports the body and makes red and white blood cells. c the skeletal system is composed of a rigid structure of bones that create strong, hard tissues called ligaments. d the skeletal system is composed of a rigid structure of bones that support the body and make red and white blood cells.

The right answer is D.

The role of the skeleton is twofold. It is both the framework of the body, on which muscles and other structures can be fixed and it also provides a protective function for certain organs.

A. is wrong because the muscles are not part of the bones.

B. is false because it is in the cartilage where the blood cells are made.

C. is false because the ligaments are not hard tissues.

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