Final answer:
The homeless man does not meet the 'safety needs' level of Maslow's hierarchy, as he lacks a stable and safe living environment while facing insecurity in his day-to-day life.
Step-by-step explanation:
The lowest level of Maslow's basic needs that the homeless man does not meet, according to the scenario provided, is safety needs. While the man seems to be fulfilling his physiological needs by sleeping on a park bench and eating one meal a day at a shelter, his safety needs, which pertain to personal, financial, and health security as well as a safe living environment, may still be unmet. Those who are homeless often face uncertainty in regards to personal security and lack a consistent, safe living space, which places them at this level of deficit within Maslow's hierarchy of needs.