The correct answer is option 'D': None of the above.

Explanation:

The World Bank is an international financial institution that provides loans and grants to the governments of poorer countries for the purpose of pursuing capital projects. It aims to reduce poverty and improve living standards by promoting sustainable economic growth, investing in human capital, and fostering resilience to global challenges.

To understand why option 'D' is the correct answer, let's analyze the other options and their objectives:

a) To provide guarantee on private loans: One of the objectives of the World Bank is to provide guarantees on private loans to encourage investment in developing countries. Guaranteeing private loans helps to mobilize additional financing for development projects, as it reduces the risk for financial institutions. This option is aligned with the objectives of the World Bank.

b) To develop production facilities in underdeveloped countries: Another objective of the World Bank is to promote economic development in underdeveloped countries. This includes supporting the development of production facilities and infrastructure to stimulate economic growth, create jobs, and reduce poverty. Developing production facilities is an important aspect of the World Bank's work to improve the economic conditions of underdeveloped countries.

c) To rehabilitate war-ruined economies: The World Bank also plays a crucial role in post-conflict situations by helping to rebuild and rehabilitate war-ruined economies. This involves providing financial and technical assistance to countries affected by conflicts, enabling them to recover and rebuild their economies. Rehabilitating war-ruined economies is a key objective of the World Bank in promoting stability and sustainable development in conflict-affected regions.

Given that all of the options mentioned are aligned with the objectives of the World Bank, the correct answer is 'D': None of the above.