What three options does Mr. Panwallah suggest for Hari to do back in his village?

In Chapter Eleven, Mr. Panwallah tells Hari that he can find work anywhere as long as he can use his hands and be willing to change and adapt. Hari tells him of the factory and how he thinks only skilled workers will be wanted. Mr. Panwallah explains that may be so, but there will be other jobs building the factory or the roads, or providing food to the workers, and some day there will be a need for all those workers to have their watches and clocks fixed.