Answer:
C. The scientist should use a light microscope.
Step-by-step explanation:
Light microscopes are microscopes that use atificial light and different kinds of magnification lenses in order to create a maximized image of the object that people is trying to study, in this case a light microscope is the perfect option to use to determine the shape of a cell, because light microscopes would be around 1500x times the size of the study object, this is perfect to study cells.