Because they had each other?!
D. The boat was too far away for the Coast Guard to reach the child.
I would say B. It inspired him to do it by the looks of things so A wouldn't make sense. C doesn't either. I don't think excited would make sense in the sentence, so B would make the most sense. Hope that helps.
Answer:
Nature is those things acquired by genetic or hereditary influences. Nurture on the other hand is those things that are influenced by the environment we live in. ... An example of this debate is whether high blood pressure and obesity is a health risk that is passed genetically from parent to child.