Answer:
The answer is physiological needs.
Step-by-step explanation:
Maslow's hierarchy of needs, usually represented as a pyramid, is composed of five levels. An individual must satisfy a lower level in order to "ascend" in the pyramid. Physiological needs are the first level of the hierarchy.
Physiological needs involve resources such as food, water, clothing and sleep. In other words, it comprises all basic human needs. Once these needs have been satisfied, a person will look to satisfy the following four levels: safety needs, love/belonging needs, esteem needs and self-actualization needs, in that order.