Herbarium is :–

Options

A. A garden where medicinal plants are grown
B. Garden where herbaceous plants are grown
C. Dry garden
D. Chemical to kill plants

Answer

### Step-by-Step Solution:

1. **Understanding the Term "Herbarium":**
- A herbarium is a collection of preserved plant specimens. These specimens are typically dried and mounted on sheets for long-term storage and study.

2. **Evaluating the Options:**
- **Option 1:** A garden where medicinal plants are grown.
- This option is incorrect because a herbarium does not involve living plants; it consists of preserved specimens.

- **Option 2:** A garden where herbaceous plants are grown.
- This option is also incorrect as it describes a living garden, while a herbarium is a collection of dead or preserved specimens.

- **Option 3:** A dry garden.
- This option is somewhat closer because a herbarium does contain dried specimens. However, it is not a garden in the traditional sense but rather a scientific collection.

- **Option 4:** A chemical that kills the plant.
- This option is incorrect as a herbarium is not a chemical; it is a collection of preserved plants.

3. **Conclusion:**
- After evaluating all options, the most accurate description of a herbarium is that it is a collection of preserved plant specimens, which can be associated with the idea of a "dry garden" since the specimens are dried and preserved. Therefore, the best answer among the given options is **Option 3: A dry garden.**