Which of the following countries has the highest biodiversity?
(a) Brazil
(b) South Africa
(c) Russia
(d) India

Options

A. Brazil
B. South Africa
C. Russia
D. India

Explanation

To determine which country has the highest biodiversity among the given options, we can analyze each country based on their biodiversity rankings and characteristics.

### Step-by-Step Solution:

1. **Understanding Biodiversity**: Biodiversity refers to the variety of life in a particular habitat or ecosystem. It includes the number of species, genetic diversity, and ecosystem diversity.

2. **Analyzing Brazil**: Brazil is known for its vast rainforests, particularly the Amazon Rainforest, which is one of the most biodiverse places on Earth. It is estimated that Brazil contains about one-tenth of all species on the planet, making it the country with the highest biodiversity.

3. **Analyzing India**: India ranks 8th in terms of biodiversity. It has a wide range of ecosystems, from the Himalayas to coastal regions, and is home to numerous species, but it does not surpass Brazil.

4. **Analyzing South Africa**: South Africa is known for its unique flora and fauna, particularly in regions like the Cape Floristic Region. However, it ranks lower than Brazil and India in terms of overall biodiversity, occupying the 13th spot.

5. **Analyzing Russia**: Russia has a diverse range of ecosystems, but due to its harsh climate and vast areas of tundra, it has lower biodiversity compared to the other countries listed.

6. **Conclusion**: After analyzing all the options, it is clear that Brazil has the highest biodiversity among the listed countries.

### Final Answer:
The country with the highest biodiversity is **(a) Brazil**.

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