Through which principle/device did Mahatma Gandhi strive to bridge economic inequalities?

Answer: Option D

Trusteeship is a socio-economic philosophy that was propounded by Mahatma Gandhi. It provides a means by which the wealthy people would be the trustees of trusts that looked after the welfare of the people in general. This concept was condemned by socialists as being in favor of the landlords, feudal princes and the capitalists, opposed to socialist theories.