"Human population grows in geometric ratio while food materials increase in arithmetic proportion." It is a statement from

Options

A. Darwin
B. Bateson
C. Amartya Sen
D. malthus.

Explanation

**Step-by-Step Solution:**

1. **Identify the Statement**: The statement in question is "Human population grows in geometric ratio while food materials increase in arithmetic proportion."

2. **Understand the Meaning**: The statement implies that the human population is increasing at an exponential rate (geometric ratio), while the resources (food) are only increasing at a linear rate (arithmetic proportion). This suggests a potential imbalance between population growth and food supply.

3. **Historical Context**: This statement is associated with the observations made in the 18th century regarding population growth and resource availability.

4. **Identify the Author**: The person who made this observation is Thomas Malthus. He wrote an essay titled "An Essay on the Principle of Population" in which he discussed these ideas.

5. **Conclusion**: The correct answer to the question is Thomas Malthus, as he is the one who articulated the concept that human population growth outpaces food supply growth.

**Final Answer**: Thomas Malthus

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