To find the difference in height, we need to consider the heights of the platform and the depth reached in the water.
- The height of the platform is 10 meters.
- The depth reached in the water is 6 meters (below the water surface).
To find the difference in height from the platform to the depth in the water, we add the depth to the height of the platform, since the depth is measured below the water level:
Height from the water surface to the bottom of the dive = Height of the platform + Depth in the water
= 10 meters + 6 meters = 16 meters.
Thus, the difference in height between the platform and the depth he reached in the water is 16 meters.
Therefore, the correct answer is 16 meters.