Life originated in which duration :

Options

A. Proterozoic
B. Mesozoic
C. Precambrian
D. Cenozoic

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the duration in which life first originated on Earth. We need to analyze the given options to determine the correct era.

2. **Analyzing the Options**:
- **Option A: Proterozoic** - This is a part of the Precambrian era, but it does not encompass the entire duration of life's origin.
- **Option B: Mesozoic** - This era is known for the age of dinosaurs and is much later than the origin of life.
- **Option C: Precambrian** - This era includes the time before the Cambrian period and is known for being the longest geological time period, covering about 88% of Earth's history.
- **Option D: Cenozoic** - This is the most recent era, known as the age of mammals, and is also much later than the origin of life.

3. **Identifying the Correct Era**: The Precambrian era is where the earliest forms of life, such as protozoa, first appeared. It is characterized by the emergence of simple life forms and is the correct answer to the question.

4. **Conclusion**: Based on the analysis, the correct answer is **Option C: Precambrian**.

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