Which of the following taxonomic categories includes one or more related orders ?

Options

A. Phylum/Division
B. Genus
C. Family
D. Class

Explanation

To solve the question "Which of the following taxonomic categories includes one or more related orders?", we will analyze the options provided and understand the taxonomic hierarchy.

### Step-by-Step Solution:

1. **Understand Taxonomic Hierarchy**:
- Taxonomy is the science of classification of living organisms. The taxonomic hierarchy is structured as follows:
- Kingdom > Phylum > Class > Order > Family > Genus > Species.
- Each level in this hierarchy groups organisms based on shared characteristics.

2. **Identify the Options**:
- The options given are:
- A) Phylum
- B) Genus
- C) Family
- D) Class

3. **Analyze Each Option**:
- **Phylum**: This category groups together classes that share certain characteristics. It includes multiple classes, but not specifically related orders.
- **Genus**: This is a category that groups species that are closely related. It does not include orders.
- **Family**: This category groups together genera (plural of genus) that share characteristics. It does not include orders either.
- **Class**: This category includes one or more related orders. For example, the class Mammalia includes the orders Carnivora (dogs, cats) and Primates (monkeys, humans).

4. **Conclusion**:
- Based on the analysis, the correct answer is **D) Class** because it is the taxonomic category that includes one or more related orders.

### Final Answer:
**D) Class**