The World Summit on Sustainable Development was held in 2002 in__________,___________ countries pledged their commitment to achieve the target by 2010.

Options

A. Rio de Janeiro, 27
B. Johannesburg (in South Africa), 190
C. Rio de Janeiro, 190
D. Johannesburg, 27

Answer

To answer the question regarding where the World Summit on Sustainable Development was held in 2002 and how many countries pledged their commitment to achieve the target by 2010, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Event**: The question refers to the World Summit on Sustainable Development, which is a significant event in the context of environmental issues and sustainable development.

2. **Determine the Year and Location**: The World Summit on Sustainable Development took place in 2002. The location of this summit is critical to answering the question.

3. **Recall the Location**: The World Summit on Sustainable Development was held in Johannesburg. This city is located in South Africa.

4. **Identify the Number of Participating Countries**: During this summit, a total of 190 countries pledged their commitment to achieving targets related to sustainable development and biodiversity conservation by the year 2010.

5. **Compile the Answer**: Based on the information gathered, the complete answer to the question is:
- The World Summit on Sustainable Development was held in **Johannesburg, South Africa**, and **190 countries** pledged their commitment to achieve the target by 2010.

### Final Answer:
The World Summit on Sustainable Development was held in **Johannesburg, South Africa**, and **190 countries** pledged their commitment to achieve the target by 2010.

---