Final answer:
Evie calling Chad a 'zero' indicates that she is unimpressed by him and likely regrets dating him, which reflects disappointment in her choice of romantic involvement.
Step-by-step explanation:
When Evie calls Chad a 'zero,' it implies a negative opinion. This expression suggests that she finds Chad to be unimpressive or lacking in qualities that she deems important or admirable. Given the context, it's reasonable to infer that Evie's feelings toward Chad are that of disappointment or regret over her decision to be involved with him romantically. Therefore, the most accurate inference would be that Evie regrets dating him, which corresponds to option (a). The term 'zero' is not typically associated with heroism, strong feelings of affection, or admiration. Instead, it denotes an absence of value or significance in the context of relationships.