One of the earliest functional microscopes was created by Englishman Robert Hooke. Which of these would his invention have been MOST useful in studying? A) Galileo's heliocentric theory B) Sir Isaac Newton's laws of motion C) Nicolaus Copernicus' model of the universe D) William Harvey's theory of the circulatory system

Respuesta :

D. is the answer. The other options are too large to be studied with a microscope.