What system consists of bones and connective tissues that protect and support the body?

The skeletal system is indeed the correct answer as it consists of bones and connective tissues that provide structural support and protection for the body. This system forms a framework that not only protects vital organs, such as the brain and heart, but also supports the overall shape of the body, enabling movement in conjunction with the muscular system.

Additionally, the skeletal system plays a critical role in the production of blood cells through hematopoiesis, which occurs in the bone marrow, and serves as a reservoir for minerals such as calcium and phosphorus. This intricate structure of bones and cartilage is fundamentally essential for maintaining the body's integrity and enabling mobility.

In contrast, while the nervous system is responsible for transmitting signals and coordinating body functions, and the muscular system enables movement through the contraction of muscles, they do not primarily serve the function of supporting and protecting the body. The integumentary system, which includes skin, hair, and nails, provides a protective barrier but does not involve the framework of bones and connective tissues.