Which type of employee often views themselves as an intellectual in a class by themselves?

The correct choice, which identifies the type of employee that sees themselves as an intellectual in a class by themselves, is 'Erudite.' This term is characterized by a deep and extensive knowledge or learning, typically in a particular field or across a range of subjects. An erudite individual often possesses a sense of pride in their intellectual accomplishments and extensive understanding, which leads them to perceive themselves as set apart from others.

In contrast, a pragmatic employee tends to focus on practical approaches and solutions rather than on intellectual distinctions. The casual type may prioritize informality and a relaxed approach to work and might not engage deeply with intellectual pursuits. Additionally, a conventional employee typically adheres to traditional ways of thinking and operating within the workplace, which does not align with the self-view of being a unique intellectual. Therefore, 'Erudite' stands out as the most fitting description for someone who sees themselves as exceptionally knowledgeable and intellectually distinct.