Pradhan Mantri Kisan Maandhan Yojana (PM-KMY) enrollment is open to farmers aged:

The correct answer is 18–40 years.

Explanation:

Pradhan Mantri Kisan Maandhan Yojana (PM-KMY) is a government scheme launched in India to provide social security to Small and Marginal Farmers (SMFs) in their old age.

Key highlights and eligibility criteria of the scheme include:

1. Age Limit for Enrollment: The scheme is voluntary and contributory for small and marginal farmers aged between 18 to 40 years.
2. Pension Benefits: Upon reaching the age of 60 years, eligible farmers receive a minimum assured pension of ₹3,000 per month.
3. Contribution: The applicants need to make a monthly contribution ranging from ₹55 to ₹200 (depending on their entry age) until they reach 60 years of age. The Central Government makes an equal matching contribution to the pension fund.