Answer;
C. a scanning electron microscope
Step-by-step explanation;
-Electron microscopy is a technique for obtaining high resolution images of biological and non-biological specimens. There are two main types of electron microscope; the transmission EM and the scanning EM.
-Scanning electron microscopes allow scientists to find the shape and surface texture of extremely small objects, including a paperclip, a bedbug, or even an atom.
-These microscopes slide a beam of electrons across the surface of a specimen, producing detailed maps of the surface of objects.