The correct answer is: a) Speedy and affordable dispute resolution.
Lok Adalats are quasi-judicial bodies that provide a mechanism for speedy and affordable dispute resolution. They are presided over by a retired judge or a sitting judicial officer, and they have the power to settle disputes through mediation, conciliation, or arbitration. Lok Adalats are an important part of the Indian judicial system, and they have been successful in resolving a large number of disputes.
Option b) is incorrect because Lok Adalats do not implement welfare schemes. Welfare schemes are implemented by the government, and they are designed to provide assistance to the poor and needy.
Option c) is incorrect because Lok Adalats do not recruit police officers. Police officers are recruited by the state government, and they are trained in police academies.
Option d) is incorrect because Lok Adalats do not collect taxes. Taxes are collected by the government, and they are used to fund government services.