This seems to be a title for a worksheet??
The mean is found by summing all data values and dividing that total by the number of values.
The mean fitness score equals 3.2 points. If every student had the identical score, each student's fitness score would be 3.2 points.
Therefore, the correct choice is D. 3.2 points.
Option B is correct, expressed as 8(25 + x) > 500; solving for x gives x > 37.50