Question

which of the following statements best explains why ball - and - socket joints have the greatest range of motion? a. the contours of the two bones allow for maximum movement. b. the even planes of the bones allow full rotation. c. the two matching surfaces allow for movement in multiple directions. d. the cup shape of the socket allows for nearly circular motion. please select the best answer from the choices provided. a b c d

Explanation:

Ball - and - socket joints consist of a ball - shaped end of one bone fitting into a cup - shaped socket of another. The cup shape of the socket enables the ball to move in nearly circular motion, allowing for a wide range of movement in multiple directions. Option A is too general, option B is incorrect as the planes are not even, and option C is less specific than D in explaining the circular - like motion enabled by the socket's shape.

Answer:

D. The cup shape of the socket allows for nearly circular motion.