Answer: human managerial skill
Explanation: These skills refers to the ability of a manager to relate, interact with his or her subordinates effectively. These are considered as an important trait in managers as per modern business environment.
In the given case, Donna works closely with her subordinates as well as with other departments and get better results. Therefore, we can conclude that she is exhibiting human relations skills as she considers the comfort of others and tries to maintain healthy relationships with them.
