Question

part a: throughout the passage, the author uses statistics to
question the validity of research regarding hunger in the united states.
commend the natural resources defense councils efforts.
demonstrate that americans have conflicting opinions regarding food waste.
illustrate the severity of a problem that exists in the united states.

Explanation:

Statistics are often used in writing to emphasize the magnitude or seriousness of an issue. In this context, it is likely to show how severe a problem (such as food - related issues like hunger or waste) is in the US.

Answer:

D. illustrate the severity of a problem that exists in the United States.