What do scanning electron microscopes and transmission electron microscopes have in common? a)both generate three-dimensional images. b)both offer magnification to the atomic level. c)both are used to view the parts of a cell. d)both require a vacuum

D. Both require a vacuum
 The Scanning Electron Microscope or SEM can have a resolution better than one nano meter as specimens are observed in high vacuum or low vacuum. In a Transmission Electron Microscope or TEM, a light source emits electrons that travel through a vacuum in a column of the microscope.

D. Both Require A Vacuum

Yes yes yes very good