Which of the following statements about classification of motor skills is true?
a. closed skills are performed in a stable, predictable environment.
b. open and closed skills exist on a discrete (discontinuous) scale.
c. open skills are generally self-paced.
d. closed skills are generally externally paced.
e. all of the preceding statements are false.

 The correct answer is :  A. Closed skills are performed in a stable, predictable environment.

Explanation:   In closed skills, the person usually knows what to do and when. These skills are not affected by the environment. the movements follow established patterns and have a very clear and defined beginning and end.

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