Who is not related to organic evolution?

Options

A. T.R. Malthus
B. Erasmus Darwin
C. Charles Darwin
D. Darlington

Explanation

To determine who is not related to organic evolution, we can analyze the options provided:

1. **TR Malthus**: He is known for his work on population growth and its implications for resources. His ideas contributed to the understanding of natural selection and competition, which are key concepts in organic evolution. Therefore, he is related to organic evolution.

2. **Erasmus Darwin**: He was a natural philosopher and poet who proposed ideas about evolution and the laws of organic life. His thoughts laid groundwork for later evolutionary theories, making him related to organic evolution.

3. **Charles Darwin**: He is the most famous figure associated with organic evolution, primarily due to his book "On the Origin of Species," which introduced the theory of natural selection. Hence, he is also related to organic evolution.

4. **Darwin Tongue**: This individual is not recognized in the context of organic evolution or evolutionary theory. There are no significant contributions attributed to him regarding evolution.

Based on this analysis, the answer to the question "Who is not related to organic evolution?" is **Darwin Tongue**.

### Step-by-Step Solution:
1. Identify the individuals mentioned in the options.
2. Analyze the contributions of each individual to the field of organic evolution.
3. Determine which individual does not have a connection to organic evolution.
4. Conclude that Darwin Tongue is the correct answer.