Answer:
A security guard's duties can vary greatly depending on the setting in which they work. In a university setting, the security guard may be responsible for monitoring access to buildings, regulating student parking, and ensuring safety on campus. In a hospital, they may be tasked with protecting patients, staff, and hospital property. In a corporate setting, they may be responsible for protecting confidential data, controlling access to buildings, and investigating suspicious activities. In a mall, a security guard's duties may include monitoring shoppers, enforcing rules and regulations, and helping to maintain a safe and friendly shopping environment.