Which type of connective tissue serves to absorb shock and reduce friction in joints?

The correct answer is cartilage. This type of connective tissue is specifically designed to provide support and cushioning in joints, where it plays a crucial role in absorbing shock and reducing friction during movement. Cartilage is a flexible yet strong tissue that covers the ends of bones in synovial joints, allowing them to glide smoothly over each other and preventing direct contact that could lead to damage or wear.

Additionally, cartilage contains a gel-like matrix that helps retain water, giving it the ability to compress under pressure and return to its original shape, which is vital for shock absorption. This unique structure and composition make cartilage essential for maintaining joint health and function.

In contrast, bone provides a rigid structure for support and mobility, while adipose tissue (fat) primarily serves as insulation and energy storage, and blood, although a connective tissue, plays a role in transport and communication within the body, rather than in joint functions.