Correct Answer (Detailed Explanation is Below)
B.
Antonie van Leeuwenhoek
Detailed Explanation
Antonie van Leeuwenhoek is widely credited with being the first person to observe and describe bacteria and other microscopic organisms using powerful single-lens microscopes. He referred to microscopic organisms as tiny living creatures. His work played a foundational role in
microbiology. Robert Hooke is associated with the early observation and naming of cells.