Answer:
The sight of the ball making contact with the bat.
Step-by-step explanation:
Given that the speed of light is 299,792,458 meters a second and the speed of sound is 343 meters a second, there will be an obviously huge difference in the speed of transmission. Knowing that sight relies on light rather than sound, and that light travels faster, the first event perceived will be the sight of the ball making contact.
Think: What do you see or hear first-- the sight of lightning, or the sound of thunder?