Disuse of the joints __________Blank, which hastens stiffening.Multiple Choicedegenerates cartilagecauses arthritishampers blood flowcauses injuries

The correct answer to fill in the blank is "degenerates cartilage."

Analysis:

The disuse of joints can lead to a range of problems, one of the most significant being the degeneration of cartilage. When joints are not used regularly, the cartilage, which serves as a cushion between the bones, does not receive the necessary nutrients and lubrication it requires to remain healthy. This lack of movement can cause the cartilage to break down or degenerate more quickly than it would with regular use. Consequently, this degeneration can lead to joint stiffness and conditions such as osteoarthritis, where the protective cartilage on the ends of bones wears down over time.

In addition to cartilage degeneration, disuse can also contribute to muscle atrophy, weakened ligaments, and overall diminished joint function, which can all lead to a heightened risk of injuries when movement is resumed. Thus, maintaining an active lifestyle with regular movement is essential for joint health and overall physical well-being.