Based on What the Text Reports, One Way to Reduce

Based on what the text reports, one way to reduce drivers' use of gasoline by monitoring may be to

A) display the current gas mileage on the dash of the vehicle.
B) tell the driver how many miles per gallon the vehicle gets.
C) ask drivers to keep track of have often they fuel up.
D) allow the government to track how many miles each vehicle on the road drives in a week.