Mark the correct option.

Options

A. Darwinism variation are small and directionless.
B. Fitness is the end result of the ability to adapt and gets selected by nature
C. Life does not comes only from pre-existing life
D. Mutations are random and directional

Answer

To solve the question, we need to analyze each of the provided statements and determine which one is correct based on biological principles, particularly those related to evolution and natural selection.

### Step-by-Step Solution:

1. **Evaluate the First Statement:**
- **Statement:** "Diagnosis variations are small and directionless."
- **Analysis:** According to Darwin's theory of evolution, variations are indeed small but they are not directionless; they are directional as they lead to adaptations that enhance survival. Therefore, this statement is **incorrect**.

2. **Evaluate the Second Statement:**
- **Statement:** "Fitness is the end result of the ability to adapt and get selected by nature."
- **Analysis:** This statement aligns with Darwin's theory of natural selection, where fitness refers to the ability of an organism to survive and reproduce in its environment. Thus, this statement is **correct**.

3. **Evaluate the Third Statement:**
- **Statement:** "Life does not come only from pre-existing life."
- **Analysis:** This statement contradicts the theory of biogenesis, which posits that life arises from pre-existing life. While life may have originated from non-living components (abiogenesis), the statement as it stands is **incorrect**.

4. **Evaluate the Fourth Statement:**
- **Statement:** "Mutations are random and directional."
- **Analysis:** Mutations are generally considered random events. While they can lead to directional changes in evolution, they are not inherently directional themselves. Therefore, this statement is **incorrect**.

5. **Conclusion:**
- Based on the analysis, the only correct statement is the second one: "Fitness is the end result of the ability to adapt and get selected by nature." Thus, the correct option is **B**.

### Final Answer:
The correct option is **B**: "Fitness is the end result of the ability to adapt and get selected by nature."