Which one of the following categories of taxonomic classification is the least inclusive?

Options

A. class
B. Family
C. genus
D. order

Answer

To determine which category of taxonomic classification is the least inclusive, we need to understand the hierarchy of taxonomic ranks. Here's a step-by-step solution:

### Step 1: Understand Taxonomic Hierarchy
Taxonomic classification is organized in a hierarchical structure. The main categories, from the most inclusive to the least inclusive, are as follows:
1. Domain
2. Kingdom
3. Phylum (or Division for plants)
4. Class
5. Order
6. Family
7. Genus
8. Species

### Step 2: Identify the Options
The question provides the following options:
- Class
- Family
- Genus
- Order

### Step 3: Analyze Each Option
- **Class**: This is a higher taxonomic rank that includes multiple orders.
- **Order**: This is lower than class but higher than family.
- **Family**: This is lower than order and includes multiple genera (plural of genus).
- **Genus**: This is the least inclusive category among the options provided, as it includes species.

### Step 4: Conclusion
Based on the analysis, the least inclusive category among the options given is **Genus**.

### Final Answer
The least inclusive category of taxonomic classification among the options is **Genus**.

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