The main objective of the use of herbicide - resistant GM crops is to

Options

A. Eliminate weeds from the field without the use of manual labour
B. Eliminate weeds from the field without the use of herbicides
C. Encourage eco - friendly herbicides
D. Reduce herbicide accumulation in food for health safety

Answer

To solve the question regarding the main objective of the use of herbicide-resistant GM crops, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Herbicide-Resistant GM Crops**:
- Herbicide-resistant genetically modified (GM) crops are designed to withstand specific herbicides, allowing farmers to control weeds without damaging the crops.

2. **Identifying the Main Objective**:
- The primary goal of developing these crops is to allow for effective weed management while minimizing the impact on the crops themselves.

3. **Analyzing the Options**:
- **Option A**: Eliminate weed from the field without the use of manual labor.
- This is not entirely accurate since herbicide-resistant crops may not eliminate all types of weeds, especially narrow-leaved ones.
- **Option B**: Eliminate weed from the field without the use of herbicide.
- This is incorrect as the purpose of these crops is to be used with herbicides.
- **Option C**: Encourage eco-friendly herbicides.
- While this is a benefit, it is not the primary objective.
- **Option D**: Reduce herbicide accumulation in food for health safety.
- This is the most accurate option, as these GM crops are designed to minimize herbicide residues in food products.

4. **Conclusion**:
- After analyzing all options, the main objective of the use of herbicide-resistant GM crops is to **reduce herbicide accumulation in food for health safety**.

### Final Answer:
The main objective of the use of herbicide-resistant GM crops is to **reduce herbicide accumulation in food for health safety**.

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