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Question

Assertion (A): A bowler is able to rotate his hand to an extent of 360 degree.
Reason (R): Shoulders have ball and socket joint.

A
Both (A) and (R) are true and (R) explains (A).
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B
Both (A) and (R) are true but (R) does not explain (A).
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C
(A) is true and (R) is false.
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D
Both (A) are (R) are false.
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Solution

The correct option is A Both (A) and (R) are true and (R) explains (A).
Joints are junctions between bones which make movement of bones possible.
There are different types of joints based on the degree of movement they permit. E.g., Hinge, ball and socket, gliding, fixed etc.
Shoulder joints and hip joints can rotate upto 360 degrees. These type of joints are called ball and socket joint.
This joint allows bowlers to rotate their arms 360 degress to bowl.

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