Statement : As many as ten coaches of a passenger train have derailed and blocked both pairs of the railway tracks. Courses of Action : I. The railway authorities should immediately send men and equipment to the spot to clear the railway tracks. II. All the trains running in both the directions should be diverted to other routes.

The correct answer is: Both I and II follow.

The statement says that ten coaches of a passenger train have derailed and blocked both pairs of the railway tracks. This means that there is a major disruption to the railway network. In order to clear the tracks and restore normal service, the railway authorities should immediately send men and equipment to the spot. They should also divert all trains running in both the directions to other routes. This will help to ensure the safety of passengers and prevent further delays.

Option I is correct because it is necessary to send men and equipment to the spot to clear the railway tracks. This will help to restore normal service as soon as possible.

Option II is also correct because it is necessary to divert all trains running in both the directions to other routes. This will help to ensure the safety of passengers and prevent further delays.

Therefore, both I and II follow.