The World Trade Organisation (WTO) lays stress on liberalization of foreign trade and foreign investment.

The correct answer is option 'D' - World Trade Organisation (WTO).

The World Trade Organisation (WTO) is an international organization that deals with the global rules of trade between nations. It was established in 1995 and currently has 164 member countries. The main objective of the WTO is to promote and facilitate international trade by creating a level playing field and reducing trade barriers.

There are several reasons why the WTO lays stress on liberalization of foreign trade and foreign investment:

1. Facilitating Global Trade: The WTO aims to promote the smooth flow of goods and services across borders. It advocates for the elimination of tariffs, quotas, and other trade barriers that restrict the movement of goods and services. By doing so, it seeks to create a more open and predictable trading system.

2. Promoting Economic Growth: Liberalization of foreign trade and investment can lead to increased economic growth. When countries open up their markets to foreign goods and investment, it encourages competition and innovation, which can spur economic development. The WTO believes that by promoting liberalization, it can contribute to global economic growth and development.

3. Ensuring Fair and Non-Discriminatory Treatment: The WTO promotes the principle of non-discrimination in international trade. It encourages its member countries to treat foreign goods and services no less favorably than domestic ones. This principle is enshrined in the Most-Favored-Nation (MFN) principle, which means that any trade advantage granted to one country must be extended to all member countries. By ensuring fair and non-discriminatory treatment, the WTO aims to create a level playing field for all participants in international trade.

4. Resolving Trade Disputes: The WTO provides a platform for its member countries to resolve trade disputes through a rules-based system. It has a dispute settlement mechanism that allows countries to bring their trade grievances to a neutral panel for resolution. By providing a transparent and predictable dispute settlement process, the WTO helps to maintain stability and predictability in the global trading system.

In conclusion, the World Trade Organisation lays stress on liberalization of foreign trade and foreign investment in order to facilitate global trade, promote economic growth, ensure fair and non-discriminatory treatment, and resolve trade disputes. By advocating for the reduction of trade barriers and promoting a rules-based system, the WTO aims to create a more open and predictable international trading environment.