A natural system of classification based on natural affinities among the organisms, including external and internal features, was given by

Options

A. Aristotle
B. Linnaeus
C. Bantham and Hooker
D. Engler and prantle

Answer

To solve the question regarding the natural system of classification based on natural affinities among organisms, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about a natural system of classification that considers both external and internal features of organisms.

2. **Identifying Key Contributors**: The question hints at a specific scientist or group of scientists who developed this classification system.

3. **Recalling Relevant Information**: The natural system of classification that includes the study of affinities among organisms was notably developed by the scientists Bentham and Hooker.

4. **Focusing on Seed Plants**: Bentham and Hooker's classification system was particularly focused on seed plants, which is an important aspect of their work.

5. **Recognizing the Classification Work**: Their work is often referred to as "Genera Plantarum," which is a significant contribution to the field of botany.

6. **Final Answer**: Based on the information gathered, the correct answer to the question is that the natural system of classification was given by Bentham and Hooker.

### Final Answer:
The natural system of classification based on natural affinities among organisms was given by **Bentham and Hooker**.

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