Which of the following safeguards must a broker-dealer maintain to protect customer funds and securities?

A broker-dealer must safeguard customer funds and securities by segregating customer assets from the firm’s proprietary business activities. Segregation helps ensure that customer securities and cash are not improperly used by the broker-dealer and remain available for customers, even if the firm experiences financial or operational difficulty. Choice D is correct. FDIC insurance applies to bank deposits at insured depository institutions, not brokerage securities accounts. Brokerage customer protection is generally associated with customer protection rules and SIPC coverage, not FDIC protection. Choice B is prohibited because firm personnel may not sign on behalf of customers merely for convenience. Choice C is incorrect because broker-dealers do not protect customers from market losses caused by declining securities values. The safeguard concerns custody and proper handling of customer assets, not investment performance. The SIE outline includes customer protection and custody of assets, improper use of customer securities or funds, and books and records requirements. It also lists FINRA Rule 2150, improper use of customers’ securities or funds, and customer protection-related rules. Reference: Section 3.2.4 Books and Records and Privacy Requirements; Section 3.3.3 Other Prohibited Activities.