A prototype is:

A) the cognitive representation of the typical/ideal defining features of a category.
B) an idealised representation of a group member.
C) an agreed specimen as a yard stick for selecting new group members.
D) a technical invention not yet gone into production.

Prototype

Cognitive representation of the typical/ideal defining features of a category.

Cognitive Representation

The way in which knowledge and ideas are mentally structured and organized within the mind.

Typical Features

Common or characteristic traits, attributes, or aspects that are usually found in a particular entity or scenario.