The topic that could be used to write a narrative using supporting details from the excerpt is, Victor's experience studying a new science. A narrative is like telling a story of happenings that follow a time sequence. It is usually based on personal experiences and usually written by the narrator himself.
Main Idea: The main idea is that tigers are going extinct but now acts are being done to help this from happening.
SD1: "A study released that the world's wild tiger population has risen for the first time in century"
I can't figure out the other 2 details.
Sorry.
i’m pretty sure the answer is C