Final answer:
The best quotation reflecting Mathilde's change in attitude is her having to haggle and fight over every halfpenny, showcasing her shift from longing for luxury to living humbly. Option first is the correct answer.
Step-by-step explanation:
The quotation that best reflects Mathilde's attitude change is: "and, clad like a poor woman, she went to the fruiterer, to the grocer, to the butcher, a basket on her arm, haggling, insulted, fighting for every wretched halfpenny of her money." This passage illustrates the transition from her previous life of longing for luxury to a new reality where she must work hard and argue over every penny. It demonstrates her change from vanity to humility, as well as the resilience she developed as a result of her circumstances.
The other options, while they represent different facets of Mathilde's situation, do not capture the depth of her character's evolution as well as her new daily struggles and the drastic change in her socioeconomic status.