Final answer:
The primary function of articular cartilage is to allow easier joint movements by providing a smooth and lubricated surface, which reduces friction at synovial joints.
Step-by-step explanation:
The function of articular cartilage in relation to the options provided is B) Allows easier joint movements. Articular cartilage covers the ends of bones at synovial joints, providing a smooth, lubricated surface for articulation, thereby reducing friction and allowing for the bones to glide over each other with minimal resistance. In addition to this primary function, the articular cartilage is crucial for shock absorption, reducing the impact stress on joints during movement. It is important to note that articular cartilage does not have its own blood supply; instead, it is nourished by the synovial fluid within the joint. This composition allows the cartilage to function effectively under the mechanical stresses of joint movement.