Question

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

Explanation:

Scanning electron microscopes (SEM) and transmission electron microscopes (TEM) operate in a vacuum to prevent electrons from interacting with air molecules. SEM can produce 3 - D like images but TEM gives 2 - D images. While they can view cell parts, their key commonality is the vacuum requirement for operation and their ability to offer atomic - level magnification. The vacuum is crucial for proper electron beam function.

Answer:

D. Both require a vacuum.