None of the alternatives are correct.
Explanation:
When a builder enters into an agreement to construct a commercial building in the residential areas that violates the laws , as a result the government stops construction. If such a scenario occurs the workers will not be paid as the construction process has stopped, so no productivity will take place and thus the workers will have to face the scenario.
While signing a contract the contractor must have proper knowledge regarding the property. Otherwise the workers will not be able to earn their daily wage.