Question

Which of the following measures cannot improve the navigability of river channel?

• A. Only 1&2
• B. Only 2 &3
• C. Only 1
• D. None of these

Answer 1

The correct option is D

None of these

Despite inherent limitations, many rivers have been modified to enhance their navigability by:

• Dredging, removing the silt by machines from the river bed.
• Stabilizing river banks by concrete.
• Building dams and barrages for regulating the flow of water.