Which one of the following periods is largely associated with extinction of dinosaurs and the increase in flowering plants and reptiles

Options

A. Triassic
B. Jurassic
C. Cretaceous
D. Permian

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the geological period that is associated with the extinction of dinosaurs and the rise of flowering plants and reptiles.

2. **Identifying the Options**: The question provides four periods as options. We need to analyze each period to determine which one aligns with the events mentioned.

3. **Reviewing Geological Periods**:
- The **Cretaceous Period** is part of the Mesozoic Era, which lasted from approximately 146 million years ago to 65 million years ago.
- During the Cretaceous, there was a significant diversification of flowering plants (angiosperms) and reptiles, including the dominance of birds.

4. **Extinction Events**: The end of the Cretaceous Period is marked by one of the largest mass extinction events in Earth's history, which led to the extinction of about 75% of species, including the dinosaurs.

5. **Conclusion**: Based on the information gathered, the period that is largely associated with the extinction of dinosaurs and the increase in flowering plants and reptiles is the **Cretaceous Period**.

**Final Answer**: Cretaceous Period

---