Final answer:
Brandon's desire to own a chimp as a pet indicates an 'eccentric' personality, suggesting he enjoys unconventional things and does not necessarily conform to societal norms. This trait shows that Brandon has unique characteristics, possibly rooted in his temperament, which can be made up of inborn, genetically based differences.
Step-by-step explanation:
The character trait of Brandon that is revealed in the statement "Brandon wanted a chimp for a pet" could be described as eccentric. Wanting a chimp as a pet is not a common or conventional desire; it is unusual and out of ordinary, indicating that Brandon likely enjoys unique things and doesn't necessarily follow what is standard or expected. This trait does not align with being adventurous, which implies seeking new experiences or thrills, nor caring, which would be indicated by actions demonstrating kindness or empathy. And it is not indicative of being pragmatic, which would suggest a more practical and realistic approach to life decisions.
Considering that temperament refers to inborn, genetically based personality differences and characteristic ways of behaving, Brandon's interest in having a chimp as a pet could stem from his inherent personality traits. This interest reflects less on the spectrum of conscientiousness, agreeableness, neuroticism, openness, and extroversion and more on a unique predilection that sets him apart from others, hence being labeled as eccentric.