Hierarchy of categories was intoduced by

Options

A. Linnaeus
B. De candolle
C. Bauhin
D. John Ray

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who introduced the hierarchy of categories in biological classification.

2. **Identifying Key Terms**: The term "hierarchy of categories" refers to the taxonomic hierarchy used in biological classification.

3. **Historical Context**: The taxonomic hierarchy is a system used to organize living organisms into categories based on shared characteristics.

4. **Key Contributors**: Several scientists contributed to the development of taxonomic classification, but the question specifically asks for the one who introduced the hierarchy.

5. **Linnaeus' Contribution**: Carl Linnaeus, a Swedish botanist, is credited with formalizing the system of naming organisms (binomial nomenclature) and establishing the hierarchical classification system.

6. **Hierarchy Levels**: Linnaeus arranged organisms into a hierarchy that includes several levels: Kingdom, Phylum, Class, Order, Family, Genus, and Species.

7. **Conclusion**: Based on this information, the correct answer to the question is Linnaeus.

**Final Answer**: The hierarchy of categories was introduced by Linnaeus.

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