Answer:
225 steps
Step-by-step explanation:
First, we need to convert all the measurements to the same unit. The standard football field length is 100 yards. One yard is equal to 36 inches. Therefore, the football field is 3600 inches long (100 yards * 36 inches/yard).
If one step of the football player measures 16 inches, then we can calculate the number of steps he must take to cross the football field by dividing the total length of the field by the length of his step.
So, 3600 inches ÷ 16 inches/step = 225 steps.
Therefore, the correct answer is:
225 steps