Arboretum is

Options

A. A forest patch
B. A piece of social forestry
C. Botanical garden with trees and shrubs
D. Botanical garden with cacti and herbs.

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Arboretum":**
An arboretum is a specific type of botanical garden that primarily focuses on the cultivation and study of trees and shrubs.

2. **Identifying the Characteristics of an Arboretum:**
- It contains living collections of woody plants.
- It is intended for scientific study and research.
- It is typically maintained by government or educational institutions.

3. **Eliminating Incorrect Options:**
- An arboretum is not merely a forest patch, which refers to a natural area with trees but lacks the organized study aspect.
- It is not a piece of social forestry, which usually involves community-managed forests for various purposes.
- It does not focus on cacti and herbs, as these are not the primary plants found in an arboretum.

4. **Conclusion:**
Based on the characteristics and the elimination of incorrect options, the correct definition of an arboretum is that it is a botanical garden with trees and shrubs.

**Final Answer:**
An arboretum is a botanical garden with trees and shrubs.

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