Blindness is prevented by use of this crop in poor countries

Options

A. Golden rice
B. Wheat
C. Gram
D. Pea

Answer

### Step-by-Step Solution:

1. **Identify the Problem**: The question asks which crop is used to prevent blindness in poor countries.

2. **Understand the Cause**: Blindness, particularly in children, is often caused by vitamin A deficiency. This deficiency is a significant health issue in many developing countries.

3. **Research the Solution**: Golden rice was developed specifically to address vitamin A deficiency. It is genetically modified to contain beta-carotene, which the body can convert into vitamin A.

4. **Historical Context**: Golden rice was developed in the late 1990s by German scientists Ingo Potrykus and Peter Beyer. Their goal was to provide a source of vitamin A in regions where rice is a staple food.

5. **Impact on Health**: In areas where rice is a major part of the diet, such as Bangladesh, vitamin A deficiency remains widespread and affects a significant percentage of children, leading to blindness and increased mortality from infectious diseases.

6. **Conclusion**: Therefore, the crop that prevents blindness in poor countries is golden rice.

### Final Answer:
The crop that prevents blindness in poor countries is **golden rice**.

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