Final answer:
In 'Because of Mr. Terupt,' Alexia frequently bullies Anna by calling her fat and making fun of her.
Step-by-step explanation:
In the book Because of Mr. Terupt, the character Alexia is known for calling another student, Anna, fat and for making fun of her most often. This behavior forms a significant part of the interpersonal relationships within the story and Alexia's character development throughout the novel. Readers see Alexia's actions and words as an example of bullying, which is a key theme addressed in the book.