Which example reflects a semantic paraphasia?

Semantic paraphasia occurs when an individual substitutes a word with another word that has a related meaning or reflects a semantic relationship. In the example of substituting "door" for "knob," both words relate to items associated with entrances; a doorknob is part of a door. This substitution demonstrates an understanding of the context and a connection between the two items, which is characteristic of semantic paraphasia.

Other examples provided do not display the same semantic relationship. "Bizza" for "pizza" is a phonological error, as it alters the sounds without conveying related meaning. The substitution of "car" for "hamburger" does not represent a close semantic association, and "schnoogie" for "toy" lacks meaningful connection, as "schnoogie" does not define a specific type of toy. Therefore, the choice that best illustrates semantic paraphasia is the one involving "door" and "knob."