Final answer:
Ligaments are mainly composed of dense irregular connective tissue, which provides strength and flexibility.
Step-by-step explanation:
Ligaments are connective tissues that connect bones together and withstand a lot of stress. Ligaments are mainly composed of dense irregular connective tissue. Dense irregular connective tissue consists of collagenous fibers interwoven into a mesh-like network, providing strength and flexibility. It is different from dense regular connective tissue where fibers are parallel to each other.