The Doing Business Report, released every year, is prepared by which of the following international organisations?

Introduction / Context:
This question belongs to international economics and institutions. The Doing Business Report ranks economies on the ease of doing business and has been widely discussed in the media. Examinations often ask which organisation publishes major global reports, because this knowledge helps candidates connect policies with responsible agencies.

Given Data / Assumptions:
- The report in question is the Doing Business Report.
- It is prepared every year by an international organisation.
- The options given are ADB, WTO, IMF, World Bank and UNDP.
- We assume the learner is familiar with the major roles of these institutions.

Concept / Approach:
The Doing Business Report was prepared by the World Bank Group. It evaluated regulations that enhance or constrain business activity across countries and ranked economies accordingly. Remembering which institution focuses on development finance and country level business environment is the key to answering correctly. Other institutions have different primary mandates, such as trade rules or monetary cooperation.

Step-by-Step Solution:
Step 1: List what each organisation is mainly known for: ADB for regional development loans in Asia, WTO for global trade rules, IMF for financial stability and balance of payments support, and World Bank for development projects and policy research. Step 2: Recall that the Doing Business Report evaluates business regulations such as starting a business, getting credit and paying taxes. Step 3: Remember that these indicators have been historically produced by the World Bank Group. Step 4: Conclude that World Bank is the correct option.

Verification / Alternative check:
An alternative check is to think about where one would go for country rankings and policy recommendations related to business regulations. The World Bank maintains a wide range of country data and has a dedicated Doing Business portal. Neither the IMF, WTO, ADB nor UNDP are primarily associated with this branded series of reports.

Why Other Options Are Wrong:
Asian Development Bank is wrong because it focuses on lending in Asia and does not publish the Doing Business series.
World Trade Organisation is incorrect since it deals with trade agreements and disputes, not detailed business regulation rankings.
International Monetary Fund is wrong because its flagship publications are the World Economic Outlook and Global Financial Stability Report, not Doing Business.
United Nations Development Programme publishes the Human Development Report, not the Doing Business Report.

Common Pitfalls:
A frequent mistake is to confuse various international reports and assume that any development related report belongs to the United Nations or IMF. Another pitfall is to overlook the difference between trade rules (WTO) and ease of doing business indicators (World Bank). Regular revision of which institution publishes which key reports helps prevent these errors.

Final Answer:
Therefore, the Doing Business Report is prepared by the World Bank.