What unusual action did Constance take during the final test?

Constance's unusual action of sitting in a corner and having a picnic during the final test serves as a pivotal moment that showcases her unique personality and approach to challenges. Instead of conforming to the expected behavior of being serious and focused during a high-stakes evaluation, she chooses to be playful and carefree. This behavior highlights her nonconformity and independence, characteristics that are integral to her role in the group.

Moreover, Constance's actions emphasize the theme of thinking outside the box, which is central to the story. While others may be engaged in the pressure of completing the test, her lighthearted antics reflect a deeper understanding of the situation and a rejection of conventional expectations. This not only contributes to her character development but also serves as a demonstration of how each member of the Mysterious Benedict Society brings their unique strengths to the team.