Who is Credited with First Observing Cells

Question

Who is credited with first observing cells?
A)Robert Hooke
B)Anton van Leeuwenhoek
C)Robert Koch
D)Louis Pasteur
E)Carolus Linnaeus

Accepted Answer

Robert Hooke is credited with first observing cells in 1665 when he looked at a piece of cork under a microscope and saw small, empty compartments that he called "cells."