Final answer:
When checking inventory in a healthcare setting, the expiration dates of medical supplies must be verified to ensure patient safety and effective care.
Step-by-step explanation:
When checking inventory in a healthcare setting, you need to verify elements that are directly related to patient care or the functionality of the healthcare facility. In this case, the correct answer is B) Expiration dates of medical supplies. It is crucial to ensure that all medical supplies are within their expiration dates to provide safe and effective patient care. This helps prevent the use of ineffective or potentially harmful supplies. Elements such as employee work schedules, patient medical histories, and cafeteria menu options are not typically part of the inventory verification process related to medical supplies.