Which of the following is an example of confidential materials commonly found in an office?

Balance sheets are considered confidential materials because they contain detailed financial information about a company's assets, liabilities, and equity. This data is sensitive and typically restricted to authorized personnel within the organization to protect financial stability and competitive advantage.

While lease agreements, sales contracts, and marketing strategies may also contain sensitive information, balance sheets specifically represent a company's financial health and are often subject to strict confidentiality protocols due to their potential impact on the business if disclosed to unauthorized parties. Therefore, balance sheets align with the concept of confidential materials commonly found in an office setting.