Hierarchical system of classification of living organisms was proposed by:

Options

A. Linnaeus
B. Whittaker
C. Theophrastus
D. Aristotle

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about who proposed the hierarchical system of classification of living organisms.

2. **Identifying the Options**: The options given are:
- A) Linus
- B) Wittaker
- C) Theoprestus
- D) Aristotle

3. **Historical Context**:
- Aristotle is known for being one of the first to classify living organisms based on morphological characteristics, but his system was quite basic and not hierarchical.
- Karl Linnaeus (often referred to as Linus in some contexts) is known for developing a more structured classification system.

4. **Linnaeus's Contribution**:
- In 1735, Linnaeus introduced a hierarchical classification system that grouped organisms into categories based on shared characteristics. He classified all living organisms into two kingdoms: Plantae (plants) and Animalia (animals).

5. **Conclusion**: Based on the historical contributions to biological classification, the correct answer to the question is **A) Linus** (referring to Karl Linnaeus).

### Final Answer:
The hierarchical system of classification of living organisms was proposed by **Linus** (Karl Linnaeus).

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