NEED HELP ASAP!!!

In temperate regions, a lot of animals are active in daylight and inactive at night. This is_[blank 1]_ because daytime temperatures are warm, and animals can rely on their_[blank 2]_ to find food.

blank 1: a survival disadvantage
blank 2: sight

blank 1: a survival advantage
blank 2: sight

blank 1: a survival advantage
blank 2: hearing

blank 1: a survival disadvantage
blank 2: hearing