A topographic map. Smith Road is near index contour line with number 450. Shelton Road is near index contour line with number 450. Imperial Drive is in an area with index contour lines with number 500. Thurgood Avenue is in an area with index contour lines numbered 450.
Which street travels through the region with the steepest slopes?
Smith Road
Shelton Road
Imperial Drive
Thurgood Avenue
