Which of the following is a requirement for pharmacies regarding controlled substances?

An accurate controlled substance log is essential for pharmacies managing controlled substances, as it serves to track and regulate the inventory and dispensing of these medications. This log is a critical component of compliance with legal and regulatory requirements. It helps prevent misuse, diversion, and ensures accountability in the handling of controlled substances. Such logs typically include information about the quantity received, dispensed, and any discrepancies that may arise. By maintaining a precise log, pharmacies can demonstrate adherence to laws governing controlled substances, bolstering patient safety and care.

In contrast, the other options do not pertain to regulatory requirements. For example, an open layout for easy access might enhance workflow but does not address the stringent protocols necessary for controlled substances. Unrestricted public access undermines security measures that are crucial in preventing theft or misuse of these drugs. Outdoor storage is not appropriate for controlled substances, as it exposes them to environmental factors and security risks that could compromise their integrity or availability. Thus, the necessity of an accurate controlled substance log stands out as the key requirement in managing these drugs responsibly within a pharmacy setting.