Fact 1: An animal requires stamina to succeed at physical activities. Fact 2: Sheep hunting is a physically demanding hunt. Given the two facts above, an animal requires what to succeed at hunting?

Possible answers:
[i] stamina;
[ii] knives;
[iii] proteins;
[iv] Energy.;
[v] fear;
[vi] food;
[vii] arrows;
[viii] energy;
Answer:
[i]