Final answer:
The retention period for various business records varies based on the document type and the regulatory or legal requirements. Advertising, Customer confirmations, Customer order tickets, and U-5 forms each have different retention periods.
Step-by-step explanation:
The question pertains to the retention period of various records within a business context, specifically an electronics chain store, a public library, and a political party's polling staff. The different records mentioned, such as Advertising, Customer confirmations, Customer order tickets, and U-5 forms, each have specific retention periods as mandated by legal, regulatory, or organizational requirements. For example, Advertising records are typically retained for a certain number of years for compliance and reference purposes. Customer confirmations and order tickets, which serve as proof of transactions and agreements with customers, may be retained to protect the company in case of disputes. U-5 forms, which are used in the financial industry to report the termination of a registered person, have their own specific retention requirements as stipulated by the Financial Industry Regulatory Authority (FINRA).