Die Naturlichen Pflanzenfamilien was written by

Options

A. Linnaeus
B. Hutchinson
C. Engler and Prantl
D. De Candolle.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the authors of the book "Die Naturlichen Pflanzenfamilien." This book is significant in the field of plant classification.

2. **Identifying the Options**: The options provided are:
- A. Linnaeus
- B. Hutchinson
- C. Engler and Prandtl
- D. De Candolle

3. **Analyzing the Options**:
- **Linnaeus**: Known for developing the binomial nomenclature system, which is a method for naming organisms using two names (genus and species).
- **Hutchinson**: Recognized for his contributions to the phylogenetic system of classification.
- **Engler and Prandtl**: These two scientists are known for their work on plant classification, specifically in the book "Die Naturlichen Pflanzenfamilien."
- **De Candolle**: Often referred to as the father of taxonomy, he made significant contributions to plant classification but did not write this specific book.

4. **Determining the Correct Answer**: Since "Die Naturlichen Pflanzenfamilien" is attributed to Engler and Prandtl, the correct answer is C. Engler and Prandtl.

5. **Final Answer**: The book "Die Naturlichen Pflanzenfamilien" was written by Engler and Prandtl.

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