What are two good scrum master facilitation practices?

What are two good scrum master facilitation practices?
A . create an environment of safety so that everyone feels comfortable contributing to the discussion
B. llow unproductive conflict to encourage open communication
C. allow for deep meaningful conversations even if it is outside the scope of the agenda
D. ensure all voices are heard
E. do not enforce accountability as it creates an environment of distrust

Answer: A, D