What is the average reading level of American adults?

The average reading level of American adults is around the eighth to ninth grade level. This is supported by various studies that have examined literacy and reading comprehension among the adult population in the United States.

Many texts, including health-related materials, are written at this level to ensure accessibility for a wider audience. If educational and health information are overly complex, they may not be understood by many adults, which can lead to challenges in effectively communicating vital information, particularly in areas like healthcare where understanding can impact decision-making.

In contrast to this correct answer, readings at a fifth-grade level would be too simplistic for the general adult population, while texts aimed at the tenth to twelfth grade levels or graduate levels would be too advanced for a significant portion of adults. Thus, the eighth to ninth grade reading level strikes a balance that accommodates the majority.