Which of the following promotes similarity among living things

Options

A. Classification of organisms
B. Natural selection in different environment
C. Inheritance from a common ancestor
D. Homeostatic regulation.

Answer

To solve the question "Which of the following promotes similarity among living things?", we will analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which factor promotes similarity among living organisms. We need to evaluate each option to determine which one fits this criterion.

2. **Evaluating Option A: Classification of Organisms**:
- Classification involves grouping organisms based on similarities and differences.
- While it does highlight similarities, its primary purpose is to categorize based on both similarities and dissimilarities.
- **Conclusion**: This option does not specifically promote similarity among living things. Therefore, it is incorrect.

3. **Evaluating Option B: Natural Selection in Different Environments**:
- Natural selection is a process where organisms better adapted to their environment tend to survive and reproduce.
- This process leads to diversity as organisms adapt to different environments rather than promoting similarity.
- **Conclusion**: This option does not promote similarity among living things. Hence, it is incorrect.

4. **Evaluating Option C: Inheritance from a Common Ancestor**:
- This concept refers to the idea that organisms inherit traits from a common ancestor.
- Organisms that share a common ancestor will exhibit similar characteristics due to shared genetic material.
- **Conclusion**: This option promotes similarity among living things, making it the correct answer.

5. **Evaluating Option D: Homeostatic Regulation**:
- Homeostasis refers to the ability of an organism to maintain stable internal conditions.
- While important for survival, it does not inherently promote similarity among different species.
- **Conclusion**: This option does not promote similarity among living things. Therefore, it is incorrect.

### Final Answer:
The correct answer is **Option C: Inheritance from a common ancestor**, as it promotes similarity among living things.

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