Mild grazing in grassland by herbivores:-

Options

A. Retards growth of grasses
B. Arrest growth of grasses
C. Stimulates growth of grasses
D. Destroy Vegetation.

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the effects of mild grazing by herbivores in grasslands. We need to determine how this activity influences the growth of grasses.

2. **Defining Grasslands**: Grasslands are large open areas primarily dominated by grasses. They can include some trees and are categorized into four main types: savanna, steppe, prairie, and pampas.

3. **Grazing as a Method of Utilization**: Grazing is a significant method for utilizing grasslands. It affects both the structure and function of the grassland ecosystem.

4. **Compensatory Growth**: Mild grazing can lead to compensatory growth in grasses. This means that when herbivores graze lightly, it can actually encourage the grasses to grow back more vigorously.

5. **Consequences of Overgrazing**: It is important to note that while mild grazing can be beneficial, overgrazing can have detrimental effects. It can alter the composition and structure of the plant community and reduce the regenerative ability of the grassland.

6. **Conclusion**: Based on the understanding that mild grazing stimulates growth, the correct answer to the question is that mild grazing in grassland by herbivores **stimulates the growth of grasses**.

### Final Answer:
Mild grazing in grassland by herbivores **stimulates the growth of grasses**.