Final answer:
Service agreements, purchase contracts, and brokerage trade records are all related to the field of business.
Step-by-step explanation:
TRUE
Service agreements, purchase contracts, and any attendant documents associated with them, or brokerage trade records are all related to the field of business. These documents are legal contracts that define the terms and conditions of a service or purchase agreement between two parties. They help establish the rights and responsibilities of each party and are important for maintaining transparency and resolving disputes.