The answer is
B........................................
Okay so nothing equals nothing so after that you get nothing
The answer is electron microscope, the magnification can be so high that it can be very expensive, most schools doesnt have them, mostly found in universities or some laboratories. the ones we usually use in home or schools are light microscope
The last option: over tens of millions of years, the giant supercontinent Pangaea began to slowly drift apart forming the continents