which microscope did anton van leeuwenhoek use to observe single - celled organisms?\no simple microscope\no…

which microscope did anton van leeuwenhoek use to observe single - celled organisms?\no simple microscope\no compound light microscope\no electron microscope\no tunneling microscope
Answer
Answer:
A. simple microscope
Brief Explanations:
Anton van Leeuwenhoek used simple microscopes. These were single - lens microscopes that he crafted himself, which allowed him to observe single - celled organisms for the first time. Compound light microscopes, electron microscopes, and tunneling microscopes were developed much later.