Explanation

A is correct because changing direction means there is acceleration (centripetal acceleration). B is incorrect because even with uniform speed, the change in direction causes acceleration. C is incorrect because the acceleration is directed towards the center and is not constant in magnitude if considering general motion, but more importantly, the concept of 'uniform' here is misleading compared to the overall nature of orbital motion. D is incorrect because while the acceleration vector changes direction, it has a constant magnitude for circular orbits, making 'accelerated' the best description.