Anti - sense RNA technology is successfully employed for the development of :

Options

A. Golden rice
B. Flavr Savr
C. Bt. Cabbage
D. All of these

Answer

### Step-by-Step Solution:

1. **Understanding Antisense RNA Technology**:
- Antisense RNA technology is a method used to inhibit gene expression. It involves the use of an antisense nucleic acid that pairs with a complementary sense RNA strand.

2. **Mechanism of Action**:
- The antisense RNA binds to the sense RNA, preventing it from being translated into a protein. This effectively reduces or inhibits the expression of specific genes.

3. **Application in Crop Development**:
- This technology has been successfully employed in various crops to enhance certain traits or to inhibit undesirable characteristics.

4. **Identifying the Crop Developed Using Antisense RNA**:
- Among the options provided (Golden Rice, Flavor Saver Tomato, Cabbage, and all of these), we need to identify which crop specifically utilized antisense RNA technology.

5. **Specific Example**:
- The Flavor Saver Tomato is a notable example where antisense RNA technology was used. It was developed to regulate the expression of the enzyme polygalacturonase, which is involved in the ripening process of tomatoes.

6. **Outcome of Antisense RNA Technology**:
- By inhibiting the expression of polygalacturonase, the ripening process of tomatoes is slowed down, which increases their shelf life.

7. **Conclusion**:
- Therefore, the correct answer to the question is that antisense RNA technology is successfully employed for the development of the Flavor Saver Tomato.

### Final Answer:
Antisense RNA technology is successfully employed for the development of **Flavor Saver Tomato**.