Q. In the context of polity, which one of the following would you accept as the most appropriate definition of liberty?

Answer: (d) Opportunity to develop oneself fully

The term ‘liberty’ means the absence of restraints on the activities of individuals, and at the same time, providing opportunities for the development of individual personalities.
Liberty, as elaborated in the Preamble, is very essential for the successful functioning of the Indian democratic system.
However, liberty does not mean ‘license’ to do what one likes and has to be enjoyed within the limitations mentioned in the Constitution itself.
In brief, the liberty conceived by the Preamble or fundamental rights is not absolute but qualified.
Though, liberty in a narrow sense is the absence of restraints. But wider interpretation of liberty is positive and that is facilitating the overall development of an individual.
Hence in the above question the most appropriate definition of liberty is to provide opportunity to develop oneself fully.