Definitely D. Because we just learned about this in science
Answer:
electron microscope
Explanation:
An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination. As the wavelength of an electron can be up to 100,000 times shorter than that of visible light photons, electron microscopes have a higher resolving power than light microscopes and can reveal the structure of smaller objects.
Its An experiment because it doesnt ask a testable question
So its B
i hoped it helped SIS
