C

Step 1: When a stone is dropped from a moving bus, it initially possesses the horizontal velocity of the bus.
Step 2: As the stone falls, two motions occur simultaneously—horizontal motion (due to the initial velocity of the bus) and vertical motion (due to gravitational acceleration).
Step 3: The horizontal motion is uniform (constant velocity), while the vertical motion is uniformly accelerated (due to gravity).
Step 4: The combination of these two motions results in a parabolic trajectory.
Therefore, the stone will hit the ground following a parabolic path.