Which of the following shows the expense of travelling on a route ?

Cost distance

The correct answer is Option 2: Cost distance

In transport geography, cost distance refers to the expense incurred in travelling or transporting goods along a route. It takes into account the monetary cost involved rather than just the physical distance or time taken.

Option 1: Km distance — Incorrect. It represents the physical distance between two places in kilometres.

Option 3: Time distance — Incorrect. It refers to the time required to travel between two places.