Identifying Physiological Needs

In the field of psychology, motivation refers to the processes that initiate, guide, and maintain goal-oriented behaviors. Different theories attempt to explain what drives our motivations. One commonly referenced theory is Maslow's hierarchy of needs, which suggests that individuals are motivated by a series of hierarchical needs ranging from physiological necessities to self-actualization.

Based on this information, what is the primary category of needs that includes basic necessities such as food and water according to Maslow's theory?