Synovial fluid is present in joint cavities of freely movable joints. Which of the following statements is true about this fluid? a) It contains enzymes only. b) It contains hydrochloric acid. c) It contains lactic acid. d) It contains hyaluronic acid.

it contains hyaluronic acid

Explanation:

Synovial fluid is made of hyaluronic acid and lubricin, collagenases and proteinases,. The synovial joints are covered with a tough, smooth cartilage called articular cartilage which together with synovial fluid allow friction free movements. The synovial fluid lubricates the joints, absorbs shock and supplies nutrients and oxygen to the articular cartilage.