Step 1: Identifying the correct option:
Liberalisation refers to the reduction of state control over the economy - deregulation, opening markets to private and foreign investment - and is a core pillar of India's 1991 economic reforms, making it directly an economic policy.
Step 2: Why the other options are wrong:
Panchayati Raj is a system of local self-government (a political/administrative institution). The National Education Policy governs the education sector. Biological inheritance is a biological/genetic concept, unrelated to policy-making.
Final Answer:
Liberalisation (Option B)