Which of the following disease is caused by a virus ?

Options :
  1. Cholera
  2. Typhoid
  3. Common cold
  4. Malaria
Answer and Explanation :-

Answer: Option 3

Explanation:

Common cols is caused by virus.Viruses cannot exist on their own and for survival they need to spread to another host.

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And the past held only this wisdom: that love was a damaging mistake, and its accomplice, hope, a treacherous illusion. And whenever those twin poisonous flowers began to sprout in the parched land of that field, Mariam uprooted them. She uprooted them and ditched them before they took hold.
-Khaled Hosseini A Thousand Splendid Suns