Questions: Who invented the microscope

The answer is the third one: Anton van Leeuwenhoek.

Explanation for each option:

1. Robert Hooke: While Robert Hooke is known for his work with microscopes and for coining the term "cell" after observing cork under a microscope, he did not invent the microscope.

2. Carolus Linnaeus: Linnaeus is known for developing the system of naming organisms (binomial nomenclature) and is not associated with the invention of the microscope.

3. Anton van Leeuwenhoek: He is often credited with the development of the microscope and is known for his pioneering work in microscopy. He made significant improvements to the microscope and was the first to observe and describe single-celled organisms, which he called "animalcules."

4. Charles Darwin: Darwin is famous for his theory of evolution by natural selection and did not have any involvement in the invention of the microscope.

In summary, Anton van Leeuwenhoek is the correct answer as he made significant contributions to the development and use of the microscope.