Which one of the following is an endangered plant species of India?

Options

A. Rauwolfia serpentina
B. Santalum album (sandal wood)
C. Cycas beddonei
D. All of the above

Explanation

To determine which one of the following is an endangered plant species of India, we can analyze the options provided.

### Step-by-Step Solution:

1. **Understanding Endangered Species**:
- Endangered species are those whose populations are declining to the point that they face a risk of extinction. This can be due to various factors, including habitat loss, overexploitation, and environmental changes.

2. **Reviewing the Options**:
- We need to evaluate the given plant species to see if they are classified as endangered in India.

3. **Analyzing Rauwolfia serpentina**:
- This plant is found at high altitudes, particularly in the Himalayas. It is known for its medicinal properties, especially in treating hypertension. Due to its rarity and medicinal value, it is considered endangered.

4. **Analyzing Santalum album (Sandalwood)**:
- Sandalwood is highly valued for its fragrant wood and medicinal properties. Due to overexploitation for its wood, it has become endangered as well.

5. **Analyzing Cyclus bedenoi**:
- This tree belongs to the gymnosperms category and is also believed to have medicinal properties. Like the others, its population is declining due to overexploitation.

6. **Conclusion**:
- All three species mentioned (Rauwolfia serpentina, Santalum album, and Cyclus bedenoi) are endangered due to their rarity and the economic importance that leads to their overexploitation. Therefore, the correct answer is that all of the above plants are endangered species of India.

### Final Answer:
**All of the above plants (Rauwolfia serpentina, Santalum album, and Cyclus bedenoi) are endangered plant species of India.**

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