Final answer:
High Mach individuals prioritize rational aspects over emotional or social facets of a situation, aligning with a utilitarian perspective.
Step-by-step explanation:
High Mach individuals are emotionally detached from others, and they focus on the rational aspects of a situation. The correct answer is C. Rational. Machiavellianism in psychology refers to a personality trait which sees a person so focused on their own interests they will manipulate, deceive, and exploit others to achieve their goals.
For example, in the study of group behavior, individuals that are high in Machiavellianism may focus less on emotional or social considerations and more on outcomes and strategies that can be seen as leveraging the situation in their most utilitarian favor, often to the exclusion of others' feelings or interests.