c. A is the correct answer.
What is centripetal acceleration?
It is the acceleration of a body traversing a circular path. Because velocity is a vector quantity (that is, it has both a magnitude, the speed, and a direction), when a body travels on a circular path, its direction constantly changes and thus its velocity changes, producing an acceleration.
According to the question.
In the picture , a person swinging a toy plane attached to a string in uniform circular motion.
The direction of velocity is perpendicular to the direction of the position and tangent to the circular orbit.
When an object moves in a circular orbit, the direction of the velocity changes and the speed may change as well.
Direction of velocity is constantly changing.
The tangent at any point gives the direction of velocity at that point, where as acceleration is always directed towards the recent in a uniform circular motion.
Therefore, vector A points in the direction of the centripetal acceleration of the plane.
Learn more about centripetal acceleration here:
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