If the story "Two Kinds" had been told through Suyuan's point of view, then first person narration would be appropriate. First person is often the most personal.
Platoon means a group of people or things that work together under a leader.
Examples can be:
A platoon of soldiers, which has ~16 - 50 soldiers
A platoon of tanks, which has ~4 - 9 tanks
etc.
hope this helps
The superlative adjective is <span>C. Longest</span>