How did Jodhpur overcome the scarcity of water?

It didn't rain in Jodhpur in 1986. It was very difficult for people to do their daily routine without water. So they thought of cleaning the stepwell that was not in use for a long time. Hence, the well for cleaning with the money collected by the people. This is how they overcame the scarcity of water. 

People did not install a hand pump in Jodhpur. So it is an incorrect option. 

Therefore, the correct answer is an option (A).