The correct answer is openness
According Five Factor Model of Personality by McCrae and Costa, humans possess five broad personality trait dimensions, which are openness, neuroticism, extraversion, conscientiousness and agreeableness. Openness includes characteristics such as willingness to try new experiences or things, imagination, creativity, a broad range of interests, etc. Since Travis is eager to try sushi, which is something new for him, he ranks high on openness.