The correct answer is C. State.
Public pensions are a type of retirement plan that is funded by the government. They are typically provided to government employees, but may also be available to other groups, such as teachers and military personnel. Public pensions are designed to provide a secure retirement income for those who have worked in the public sector.
Insurance companies do not provide public pensions. They may offer private pension plans, but these are not funded by the government. NGOs are non-governmental organizations. They may receive government funding, but they are not part of the government and do not provide public pensions. Employees do not provide public pensions. They may contribute to a public pension plan, but the plan is funded by the government.
Public pensions are a valuable benefit for government employees. They provide a secure retirement income and can help to attract and retain qualified employees. However, public pensions can also be expensive for the government. In recent years, some governments have been facing challenges in funding their public pension plans.