A consumer's responsibility includes which of the following behaviors?

The consumer's responsibility encompasses ethical behavior and honesty in all transactions. Returning excess change if overpaid demonstrates integrity and respect for the retailer’s resources. This action reflects a commitment to fairness and acknowledges that consumers have a role in ensuring proper financial exchanges. Upholding such values not only benefits individual transactions but also helps to foster trust within the marketplace.

In contrast, behaviors such as switching price tags, shopping while under the influence, and not reading labels before purchase reflect irresponsibility. They do not align with the values of ethical consumerism and can lead to negative consequences for both the consumer and the seller. Engaging in unethical practices undermines the foundation of fair commerce and can result in legal repercussions or loss of reputation. Thus, the emphasis on returning excess change when overpaid highlights the importance of honesty in consumer behavior.