Is this singular or plural? the children's faces

Hey student is writing a conclusion for his research based informative essay on the possibility of exploring and having mars where should he including his conclusion select two options

Read the passage from an argumentative essay. many endangered species are currently threatened by climate change. there are some laws already in place, but are they effective enough? anyone with a conscience knows that these creatures deserve the chance to survive without outside threats impeding their survival. i suppose this is a tough decision for lawmakers, but i hope they choose wisely. which statement best evaluates the claim in the passage?

Review the theme beauty exists within each person which line from beauty best communicates this theme