Answer:
(c). cytopathic effects of viruses acute viral infections.
Step-by-step explanation:
Cytopathogenic effect or cytopathic effect can be described as the structural changes in cells of host due to viral infection.
Some examples of cytopathic effects are:
-rounding of viral infected cell.
-formation of syncytia by fusion of adjacent cells and polykaryon development. During this, cell membrane or 4 or more host cells join together and form an enlarged cell with 4 or more nuclei.
-formation of cytoplasmic or nuclear inclusion bodies. Inclusion bodies represent abnormal, insoluble structures formed in cytoplasm or nuclei.
Thus, the correct answer is option (c).