size of subatomic particles composition of living things number of the moons of Jupiter formation of sedimentary rocks
I gave my students this multiple choice question: Which concept was most likely modified due to the invention of the microscope?

Only one answer is correct among these 4 choices:
- size of subatomic particles
- composition of living things
- number of the moons of Jupiter
- formation of sedimentary rocks

Could you tell me which one is correct?

composition of living things