Which of the following supports most satisfactorily the organic evolution

Options

A. Fossils
B. Neoteny
C. Connecting links
D. None of the above

Explanation

### Step-by-Step Solution:

1. **Understanding Organic Evolution**: Organic evolution refers to the process through which species change over time through mechanisms such as natural selection, genetic drift, and mutation. It involves the gradual development of new species from ancestral forms.

**Hint**: Think about how species adapt to their environments over long periods.

2. **Identifying the Options**: The options provided are:
- Cells
- Neotany
- Connecting links
- None of the above

**Hint**: Consider what each term means and how it relates to the concept of evolution.

3. **Evaluating Fossils**: Fossils are the preserved remains or impressions of organisms from the past. They provide crucial evidence of how species have changed over time and how different species are related to one another. Fossils can show transitional forms and help in understanding the evolutionary history.

**Hint**: Think about how fossils can provide a timeline of life on Earth.

4. **Analyzing Neotany**: Neotany refers to the retention of juvenile features in the adult stage of an organism. While it is an interesting concept in development and evolution, it does not directly support the broader concept of organic evolution as a whole.

**Hint**: Consider how neotany might be an adaptation but does not encompass the entire evolutionary process.

5. **Considering Connecting Links**: Connecting links are organisms that exhibit traits of two different groups, helping to illustrate evolutionary relationships. While they are important for understanding evolution, they do not provide as comprehensive a picture as fossils do.

**Hint**: Reflect on how connecting links serve as examples but may not be as definitive as fossil evidence.

6. **Conclusion**: Among the given options, fossils provide the most satisfactory support for organic evolution because they offer direct evidence of the changes in species over time.

**Final Answer**: The option that supports organic evolution most satisfactorily is **fossils**.