The correct answer is: B. military reasons.
Operations research (OR) is a discipline that deals with the application of advanced analytical methods to help make better decisions. It was developed during World War II to help the Allies solve complex problems related to logistics, transportation, and combat. After the war, OR was adopted by businesses and other organizations to improve efficiency and effectiveness.
OR is a multidisciplinary field that draws on mathematics, statistics, economics, and computer science. It is used to solve a wide range of problems, including scheduling, inventory control, supply chain management, and risk analysis.
Here is a brief explanation of each option:
- A. Medical reasons: OR is not used for medical reasons.
- B. Military reasons: OR was developed during World War II to help the Allies solve complex problems related to logistics, transportation, and combat.
- C. Educational reasons: OR is not used for educational reasons.
- D. To improve transportation: OR is used to improve transportation, but it was not developed for this purpose.
- E. None of the above: The correct answer is B.