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B
Flexion
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C
Extension
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D
Retraction
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Solution
The correct option is B Elevation
Joints are points of contact between bones, or between bones and cartilages.
Synovial joints are characterized by the presence of a fluid-filled synovial cavity between the articulating surfaces of the two bones. These joints help in locomotion and many other movements. The hinge joint is a type of synovial joint.
extension refers to movement in the posterior direction. For example, when standing up, the knees are extended.
Hence standing on tiptoe(HINGE JOINT AT ANKLE) is an example of an extension.