If you are sitting on a chair and swinging your legs, which joints are you moving?
A
Ball and socket joint
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B
Pivot joint
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C
Hinge joint
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D
Fixed joint
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Solution
The correct option is C Hinge joint Hinge joints are like door hinge where back and forth movement is possible. Ex: Knee, elbow, etc. So if you are sitting on a chair and swinging your legs, you are moving hinge joints.