The correct chronological sequence of Eras is

Options

A. Mesozoic `to` Coenozoic `to` Archaeozoic
B. Coenozoic `to` Proterozoic `to` Mesozoic
C. Palaeozoic `to` Mesozoic `to` Coenozoic
D. Palaeozoic `to` Archaeozoic `to` Coenozoic

Answer

To determine the correct chronological sequence of geological eras, we need to understand the order in which these eras occurred in Earth's history. The three main eras we are considering are Paleozoic, Mesozoic, and Cenozoic.

### Step-by-Step Solution:

1. **Identify the Eras**: The three geological eras we need to arrange are:
- Paleozoic
- Mesozoic
- Cenozoic

2. **Determine the Time Frames**:
- **Paleozoic Era**: This era lasted from approximately 600 million years ago to about 230 million years ago.
- **Mesozoic Era**: This era followed the Paleozoic and lasted from about 230 million years ago to approximately 63 million years ago.
- **Cenozoic Era**: This era began after the Mesozoic and continues to the present, starting around 65 million years ago.

3. **Arrange the Eras Chronologically**:
- Based on the time frames identified:
- First: Paleozoic (600 to 230 million years ago)
- Second: Mesozoic (230 to 63 million years ago)
- Third: Cenozoic (65 million years ago to present)

4. **Select the Correct Option**:
- The correct chronological sequence of the eras is:
- Paleozoic → Mesozoic → Cenozoic

### Conclusion:
The correct chronological sequence of the geological eras is Paleozoic, Mesozoic, and Cenozoic. This matches option number three in the provided choices.

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