The theory that living organisms on the earth came from outer space is based on the study of

Options

A. Igneous rocks
B. Sedimentary rocks
C. Meteorites
D. Moon soil.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the theory that suggests living organisms on Earth originated from outer space.

2. **Identifying the Relevant Theory**: The relevant theory in this context is known as the "Panspermia hypothesis." This hypothesis posits that life did not originate on Earth but was instead brought here from elsewhere in the universe.

3. **Analyzing the Options**: The options provided are:
- a. Igneous rocks
- b. Sedimentary rocks
- c. Meteorites
- d. Moon soil

4. **Connecting the Theory to the Options**: The Panspermia hypothesis specifically relates to the idea that life could be distributed throughout the universe via space dust, asteroids, and meteoroids. Among the options, meteorites are the most relevant, as they are remnants from space that could potentially carry microbial life or organic compounds.

5. **Selecting the Correct Answer**: Based on the connection between the Panspermia hypothesis and the options provided, the correct answer is:
- **c. Meteorites**

6. **Conclusion**: The theory that living organisms on Earth came from outer space is based on the study of meteorites.

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