Q: Fact 1: Smell is used for finding food by some animals. Fact 2: Food is needed for survival. Given the two facts above, what do some animals need to survive?

OPT:
(i) radiation.
(ii) smell.
(iii) Energy.
(iv) harm.
(v) warmth.
(vi) oxygen.
(vii) defeat.
(viii) Water.
A:
(ii)