Answer: A) Mira is more mature than the other kids in the group and B) Mira is acting like a leader for the group of children
In this excerpt, Mira is showing her maturity by stopping the boys from fighting by pulling them apart. The author even goes as far as describing Mira as "motherly", which also reinforces the idea that Mira has a higher level of maturity in caring for others, which makes option A a correct answer. Moreover, Mira is looking to take charge of the situation and find a way to calm the boys, which she does by telling them to make a circle and clap. Therefore, option B is a correct answer too, as Mira is doing what a group leader would do in the same situation.
Option C, "Mira is pushing around other kids and hoping to win the game" is not correct because the conflict happened while the kids were trying to decide their own roles in the game. The game hadn't started yet, so Mira can't be pushing anyone around with hopes of winning an unexistent game.
Option D, "Mira is arrogant and haughty and tries to disrupt the kids' games" is also incorrect because Mira separates the boys to prevent a bigger fight, not to disrupt their game.