Darwin is associated with

Options

A. Natural selection
B. Mutation
C. Inorganic evolution
D. All of the above

Explanation

**Step-by-Step Solution:**

1. **Identify the Key Figure**: The question asks about what Darwin is associated with. The key figure here is Charles Darwin, a prominent naturalist.

2. **Understand Darwin's Contribution**: Darwin is best known for his contributions to the theory of evolution. His most significant work revolves around the concept of Natural Selection.

3. **Define Natural Selection**: Natural Selection is a process where organisms better adapted to their environment tend to survive and produce more offspring. This concept explains how species evolve over time.

4. **Differentiate from Other Theories**: While discussing Darwin, it is important to differentiate his ideas from those of other scientists. For example, the mutation theory was proposed by Hugo de Vries, and inorganic evolution refers to the formation of molecules, which are not directly associated with Darwin.

5. **Conclude with the Correct Association**: Based on the above points, it is clear that Darwin is primarily associated with the theory of Natural Selection.

**Final Answer**: Darwin is associated with Natural Selection.

---