What are ligaments primarily responsible for in the body?

Ligaments are primarily responsible for connecting bones at joints, which plays a crucial role in maintaining stability and proper function during movement. They are composed of dense connective tissue and serve to strengthen joints by preventing excessive movement that could lead to injury. Each ligament connects one bone to another, contributing to the overall structure and integrity of the skeletal system.

While ligaments do not connect muscles to bones—that function is carried out by tendons—nor do they provide cushioning around joints, which is the role of cartilage, or exclusively stabilize the spinal column, their function in connecting bones at joints remains essential for joint stability and mobility. This makes option B the correct choice in identifying the primary responsibility of ligaments in the body.