Origin of life' was written by

Options

A. Oparin
B. Weismann
C. Lamarck
D. Darwin

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks about the author of the book titled "Origin of Life."

2. **Recall Relevant Information**: The book "Origin of Life" is attributed to a scientist known for his contributions to the understanding of life's beginnings.

3. **Identify the Scientist**: The scientist who wrote "Origin of Life" is A. I. Oparin, a Russian scientist.

4. **Publication Details**: Oparin published this book in the year 1936, and the English edition was released in 1938.

5. **Compare with Other Scientists**: While J.B.S. Haldane also contributed ideas regarding the origin of life, the credit for the book specifically goes to Oparin.

6. **Eliminate Incorrect Options**: Other mentioned scientists like Weismann and Lamarck are associated with different theories in biology and evolution, but they did not write "Origin of Life."

7. **Conclude the Answer**: Therefore, the correct answer to the question is that "Origin of Life" was written by A. I. Oparin.

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