The swine flu virus can be present in which animal?
C
Correct answer
Explanation
Swine flu (H1N1) primarily infects pigs, which is why it's called 'swine' flu. The virus originated in pig populations and can spread from pigs to humans. While humans can transmit it to each other, pigs remain the natural reservoir host. Note: 'Buffalow' in option D is misspelled (should be 'Buffalo').