Fact 1: Shelter is used for protection by animals against weather. Fact 2: Many snakes seek shelter from the winter weather by holding up in dens. Given the two facts above, why does a snake look for shelter in the winter?

OPT:
(i) Protection.
(ii) Food.
(iii) adding heat.
(iv) Water.
(v) When it's cold.
(vi) Darkness.
(vii) energy barrier.
(viii) hydration.
Answer:
(i)