Part b: which detail from the text best supports the answer to part a commonlit grit

"In a traditional academic model, we group students together, usually by age, and around middle school, by age and perceived ability, and we shepherd them all together at the same pace." (Paragraph 6)

"the students can actually master the concepts, but they're also building their growth mindset, they're building grit, perseverance, they're taking agency over their learning." (Paragraph 17)

"To actually do it, every student would be on their own track. It would have to be personalized, you'd have to have private tutors and worksheets for every student." (Paragraph 15)

"So as a society, we have a question: All this new productivity is happening because of this technology, but who participates in it?" (Paragraph 21)