Am I misunderstanding something? Same passage, same question, two different skill building activities, two different answers.
Seen in Main Idea (Reading):
Seen in Sentence Function (Reading):
I think the “main topic” does not need to be the same as the “main idea”. A topic is quite broad, but an idea is something specific.
"PoE in Grit plays a more important role " is an idea about the topic of “grit”