Answer:
Option D - Resolution
Step-by-step explanation:
Resolution is the ability of microscopes to place individual images at two points that are extremely close.
It depends on several factors, including the wavelength at which it is working as well as the quality of the sample, if it has adequate staining. As the resolution power grows smaller, the resolution limit will be reduced, which reduces the distance between two objects that can differentiate an optical system. Electron microscopes clearly have a higher resolution power than optical ones; in turn the lenses can enlarge the image produced but can never increase the resolution