Final answer:
The personality trait that encompasses being imaginative is E) openness to experience, one of the Big Five personality traits.
Step-by-step explanation:
The personality characteristic that refers to the disposition to be imaginative, nonconforming, and unconventional is E) openness to experience. Openness is one of the five major dimensions of personality, often represented as part of the Big Five personality traits or the Five Factor Model. People who score high on this trait are often very creative, imaginative, and open to trying new things. They exhibit a broad range of interests and a willingness to think outside of the box and embrace novel ideas, which are key components of being open to experience. Openness to experience is one of the five factors of personality in the Five Factor Model, which also includes conscientiousness, extroversion, agreeableness, and neuroticism. People who score high on openness to experience tend to be creative, curious, and have a wide range of interests.