A runner sprints the final lap of a race at a constant speed of 7 meters per second. During the final lap, the distance from the runner to the finish line can be modeled by the formula
f
=
g
−
7
h
.

In the formula, what quantity does the variable
g
represent?

the entire length of the final lap

the rate at which the runner is sprinting

the remaining distance from the runner to the finish line

the number of seconds since the runner began the final lap