which microscope did anton van leeuwenhoek use to observe single - celled organisms? simple microscope…

which microscope did anton van leeuwenhoek use to observe single - celled organisms? simple microscope compound light microscope electron microscope tunneling microscope
Answer
Answer:
A. simple microscope
Brief Explanation:
Anton van Leeuwenhoek used simple microscopes. These were single - lens microscopes that he made himself and with which he first observed single - celled organisms. Compound light microscopes, electron microscopes, and tunneling microscopes were developed much later.