Final answer:
Stargirl's actions that violated unwritten rules of society were: wearing colorful clothes, starting a club focused on kindness, and cheering for both teams at a basketball game.
Step-by-step explanation:
According to this section, three events show that people are starting to mistrust Stargirl.
- Stargirl wore colorful clothes to school, which went against the dress code. This violated the unwritten rule of conforming to the expected dress standards in school.
- Stargirl started a club focused on kindness, causing division among students. This violated the unwritten rule of maintaining social harmony and not disrupting the existing social order.
- Stargirl cheered for both teams at a basketball game, confusing everyone. This violated the unwritten rule that one should only support their own team and not confuse or disrupt the competitive environment.