Answer:
The detail that best supports the idea that the narrator's work at the conservancy could have an impact on the environment is "The narrator takes part in two important initiatives to help protect the sea turtles."
Step-by-step explanation:
The narrator tells the story of how he became aware of all the dangers little turtles have to face at beach when they hatched from their egg in order to survive and he participated in a program to track migration patterns as well as another program to alert businesses on the waterfront of the dangers that their bright lights posed to the hatchlings.