First transgenic plant released for commercial use was

Options

A. Bt-cotton
B. Golden rice
C. Tobacco
D. Solan gola

Answer

### Step-by-Step Solution:

1. **Understanding Transgenic Plants**: Transgenic plants are those that have been genetically modified to express a gene from another organism. This process involves techniques such as genetic engineering.

2. **Identifying the First Transgenic Plant**: The question asks for the first transgenic plant that was released for commercial use. The options given are BT cotton, golden rice, tobacco, and Solangola.

3. **Analyzing the Options**:
- **BT Cotton**: This was commercially released in 2002 and is modified to produce a toxin from *Bacillus thuringiensis* to protect against pests.
- **Golden Rice**: This was also introduced in 2002 and is engineered to produce beta-carotene, a precursor of vitamin A.
- **Tobacco**: This was the first plant to be genetically modified and released for commercial use in the early 1990s. It was modified to be resistant to nematodes using RNA interference techniques.
- **Solangola**: This is a variety of tomato but is not recognized as a transgenic plant.

4. **Conclusion**: Based on the historical context and the timeline of commercial releases, the first transgenic plant released for commercial use is **tobacco**.

5. **Final Answer**: The correct answer is **tobacco**.