Final answer:
The most correct statement about categorization is that the more complex the category, the more susceptible it is to the illusion of the expert.
Step-by-step explanation:
When considering categorization, prototypes play an essential role; they are the best examples or representations of a concept. Regarding the statements provided, option 3 is the most correct: 'The more complex the category, the more susceptible it is to illusion of the expert'. Experts in a particular domain tend to have a more complex understanding of categories within their field of expertise, which can lead to the assumption that others share this complex understanding, a phenomenon known as the 'illusion of the expert'. In contrast, simpler categories are less prone to this because they are more widely understood and do not require specialized knowledge to be categorized effectively.