Final answer:
The need related to keeping a roof over one's head as per Maslow's hierarchy is safety, which is the second tier of the pyramid and includes the security of shelter.
Step-by-step explanation:
The need that relates to keeping a roof over one's head according to Maslow's hierarchy of needs is safety. This falls into the second tier of Maslow's pyramid and includes personal and financial security, as well as health and well-being. Having a shelter is a fundamental aspect of feeling safe and secure. Physiological needs, which are at the base of the pyramid, include basic necessities such as food, water, and sleep, which are crucial for survival. Once these are fulfilled, individuals can then focus on fulfilling safety needs, followed by love/belonging, esteem, and ultimately, self-actualization.
Answer: d. Safety