The historic convention on Biological Diversity held in Rio de Janeiro in 1992 is known as

Options

A. CITES Convention
B. The Earth Summit
C. G-16 Summit
D. MAB Programme

Answer

To answer the question regarding the historic convention on Biological Diversity held in Rio de Janeiro in 1992, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Event**: The question refers to a significant international event focused on biological diversity that took place in 1992.

2. **Recall the Location and Date**: The event was held in Rio de Janeiro, Brazil, from June 3 to June 14, 1992.

3. **Understand the Purpose of the Convention**: This convention aimed to address global environmental issues and promote sustainable development, particularly concerning biodiversity.

4. **Name of the Convention**: The convention is commonly known as the "Earth Summit." This name reflects its broad focus on environmental issues and sustainable development.

5. **Consider Other Options**:
- Option A refers to the "Scythes Convention," which is incorrect as it pertains to endangered species and was held in Geneva.
- Option C mentions the "G16 Summit," which is not related to biodiversity.
- Option D refers to the "MAB Program" (Man and Biosphere Program), which is unrelated to the Earth Summit and was established earlier in 1971.

6. **Conclusion**: Based on the information, the correct answer to the question is that the historic convention on Biological Diversity held in Rio de Janeiro in 1992 is known as the "Earth Summit."

### Final Answer:
The historic convention on Biological Diversity held in Rio de Janeiro in 1992 is known as the **Earth Summit**.