Fact 1: Oxygen is essential for cellular respiration for all aerobic organisms. Fact 2: Fungi are aerobic organisms. Given the two facts above, what requires oxygen for cellular respiration?

Possible answers:
(I) bamboo.
(II) gravity.
(III) digestion.
(IV) plants.
(V) fungi.
(VI) bacteria.
(VII) animals.
(VIII) ferns.
Answer:
(V)