Groups of related orders are included in ___________ .

Options

A. class
B. phylum
C. kingdom
D. family

Explanation

To answer the question "Groups of related orders are included in ___________," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Hierarchical Classification**: Biological classification is organized in a hierarchical structure. The main levels of classification are: Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species.

2. **Identify the Level of Classification**: The question asks about "groups of related orders." In biological classification, an "order" is a rank in the hierarchy.

3. **Determine What Comes Above Order**: In the classification hierarchy, the level that comes above "order" is "class." Therefore, related orders are grouped together under a class.

4. **Conclusion**: Based on the classification hierarchy, we conclude that "groups of related orders are included in class."

### Final Answer:
Groups of related orders are included in **class**.

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