The name of the diagram that illustrates the concept that physical needs must be met before all other needs and wants is Maslow's Hierarchy of Needs.
Maslow's Hierarchy of Needs is a psychological theory developed by Abraham Maslow in the mid-20th century. It is depicts five distinct levels of needs arranged in a hierarchical order.
At the base of the pyramid are the physiological needs such as food, water, shelter and sleep.
The hierarchy progresses upwards through the following levels safety needs, love and belongingness needs, esteem needs and self-actualization needs.
Therefore, the Option D is correct.