Answer:
agreeableness
Step-by-step explanation:
Pleasantness is the trait related to friendly, generous individuals, concerned with social harmony and optimists. This trait of responsibility can be seen in the question above, in Marion, since she decided to complain less and live more lightly, happily, helping others and in a good mood. That way Marion can make your life less stressful and even manage to make other people more comfortable and happy.