Which term best describes a simpleton?

The term that best describes a simpleton is "silly person." A simpleton generally refers to someone who lacks common sense or who acts in a naive or foolish manner. This characterization highlights a certain level of innocence or a lack of sophistication in thought processes.

In contrast, the other choices refer to traits that do not align with the definition of a simpleton. A wise person possesses deep knowledge and sound judgment, making this the opposite of a simpleton's perceived foolishness. A resourceful individual demonstrates the ability to handle difficult situations effectively, which again suggests a level of cleverness and competence not associated with being a simpleton. A complex thinker engages in detailed analyses and abstract reasoning, emphasizing critical thinking skills that a simpleton typically lacks.