We had to pay more taxi fare because the driver brought us by a …… route. A. circular B. circumscribed C. longest D. circuitous

The correct answer is D. circuitous.

A circular route is a route that is round. A circumscribed route is a route that is drawn around something else. The longest route is the route that takes the most time to travel. A circuitous route is a route that is indirect or roundabout.

In the given question, the driver brought the passengers by a route that was indirect or roundabout, which is why they had to pay more taxi fare.