When Mrs. Jones turns to the wall and realizes what was drawn.
One of Arachne's character traits is that she boasts about her skills, this determines how the conflict is resolved. She is a very talented waver and she doesn't recognize that part of her talent comes from Athena. Athena decides to give her the body of a spider after they engage in a contest and Arachne's weaving depicts the god's mean actions. Athena is mad at Arachne because she makes fun of the gods and thinks she is better than Athena herself.
A. Because setting rules can let each person in the group get a chance to speak.