Which of the following best describes a synovial joint?

A synovial joint is characterized by the presence of multiple components that facilitate movement. It consists of two or more bones that are covered at their ends with hyaline cartilage, which helps reduce friction and absorb shock during movement. In addition to the cartilage, synovial joints contain a joint capsule filled with synovial fluid, which lubricates the joint and nourishes the cartilage.

This structure allows synovial joints to provide a wide range of motion, including flexion, extension, rotation, and in many cases, movement in multiple directions. Therefore, the description highlighting the presence of two or more bones with hyaline cartilage accurately captures the essential characteristics of a synovial joint, making it the best choice among the options provided.

In contrast, the other options do not accurately reflect the nature of synovial joints. A joint composed of only one bone does not align with the definition of any joint type involving movement or articulation between bones. While some synovial joints indeed allow movement in all directions, this is not universally applicable to all synovial joints, as some are more limited in their range of motion. Lastly, a joint with no movement capabilities is entirely inconsistent with the definition of a synovial joint, which is