Final answer:
Stella would be most likely to score low on the conscientiousness scale of the 5 factor model of personality.
Step-by-step explanation:
In the Five Factor Model of personality, Stella would be most likely to score low on the conscientiousness scale. Conscientiousness is characterized by competence, self-discipline, thoughtfulness, and achievement-striving.
People who score high on this factor are hardworking and dependable.
Stella's careless attitude and being late for meetings suggests a lack of self-discipline and goal-directed behavior, which aligns with a low conscientiousness score.