Abacterial sample is spray-coated with a metallic mixture and subjected to an electron beam during:
a) confocal microscopy
b) flourescent microscpy
c) surface electron microscopy
d) scanning electron microscopy
e) transmission electron microscopy

D) scanning electron microscopy

Explanation:

Scanning electron microscopy is the process in which a surface are sprayed by the metallic mixture and scanning surface with the focus beam of the electron. This technique are widely used for bacteria and virus. This process are used for obtaining the information in the surface composition and interacting to produced the sample and signals with the help of electron in beam.

a. the production of carbon dioxide through the process of photosynthesis