Nobel laureate Norman E. Borlaug developed his modified crop varieties at -

Options

A. International Rice Research Institute, Philippines.
B. International Centre for Wheat and Maize Improvement, Mexico
C. International Centre for Wheat and Rice Improvement, Mexico
D. International Wheat Research Institute, Philippines.

Answer

**Step-by-Step Solution:**

1. **Identify the Subject of the Question:** The question is about where Nobel Laureate Norman E. Borlaug developed his modified crop varieties.

2. **Recall Relevant Information:** Norman E. Borlaug is known for his contributions to agriculture, particularly in developing high-yielding varieties of crops, especially wheat and rice.

3. **Examine the Options Provided:**
- International Rice Research Institute, Philippines
- International Center for Wheat and Maize Improvement, Mexico
- International Center for Wheat and Rice Improvement, Mexico
- International Wheat Research Institute, Philippines

4. **Analyze Each Option:**
- The **International Rice Research Institute** is primarily focused on rice and not specifically on wheat.
- The **International Center for Wheat and Maize Improvement** is located in Mexico and is known for developing semi-dwarf varieties of wheat.
- The **International Center for Wheat and Rice Improvement** is not a recognized institute associated with Borlaug's work.
- The **International Wheat Research Institute** is not a widely recognized name in the context of Borlaug's contributions.

5. **Select the Correct Answer:** Based on the analysis, the correct answer is the **International Center for Wheat and Maize Improvement, Mexico**.

6. **Conclusion:** Norman E. Borlaug developed his modified crop varieties at the International Center for Wheat and Maize Improvement in Mexico.

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