Final answer:
The maintenance supervisor holds the primary responsibility for performing daily walk-arounds as part of their role in overseeing the maintenance and safety of an organization's facilities(option b).
Step-by-step explanation:
The primary responsibility for ensuring a daily walk-around is performed typically falls to the option b) maintenance supervisor.
This role is generally responsible for the upkeep, maintenance, and surveillance of the physical condition and safety of an organization's facilities. While the CEO is ultimately responsible for the overall operation of a company, the day-to-day operational duties such as walk-arounds are delegated to the maintenance team. Janitorial staff may assist with some aspects of maintenance, but their core duties revolve around cleaning, whereas security guards are primarily concerned with protecting property and people.