Final answer:
Flexibility refers to the degree to which one can move their joints, and it is a true statement. It is determined by the range of motion offered by synovial joints, such as ball-and-socket joints, and is influenced by ligaments and connective tissues.
Step-by-step explanation:
The statement that flexibility is how far and how easily one can move the joints is indeed true. Flexibility involves the range of motion in a joint or series of joints, and reflects the ability of the muscles and connective tissues to stretch. The range of motion is influenced by the mobility of the synovial joints and their structural classification
Synovial joints have a space filled with lubricating fluid, allowing the bones to move smoothly against each other. These joints can be quite mobile; for example, a ball-and-socket joint like the shoulder has a large range of motion due to minimal ligament support. In contrast, the hip joint's movements are more restricted by strong ligaments, which offer stability.
While highly mobile joints like the shoulder provide a wide range of motion, they tend to be less stable compared to more restricted joints. Thus, contrary to the statement in option (c), it's not the carpal bones that allow the greatest range of motion but the shoulder joint, and carpal bones are indeed more stable.