The first compound microscope was constructed by which of the following?

• Explanation:
-While there is some debate surrounding the exact inventor due to the historical nature of the claim, the most widely accepted answer is that Hans Lippershey and Zacharias Janssen, two Dutch spectacle makers, invented the first compound microscope around 1590. They independently developed instruments that used multiple lenses to magnify objects, laying the foundation for future microscope designs.

0ther options explanations:
-Robert Hooke: Although Robert Hooke made significant contributions to microscopy, including coining the term "cell", he did not invent the first compound microscope. His work came later in the 17th century.
-A. van Leeuwenhoek: Antonie van Leeuwenhoek, another Dutch scientist, was a pioneer in improving microscope technology and making groundbreaking observations, but he was not credited with the initial invention of the compound microscope.