Final answer:
A manager informing employees about changes in the organization's environment plays the role of a disseminator according to Mintzberg. This role involves communicating vital internal and external information to the team.
Step-by-step explanation:
When a manager informs employees about changes taking place in the external and internal environments that will affect them and the organization, according to Mintzberg, she plays the role of a disseminator. The disseminator role involves communicating potentially useful information to colleagues and team members both inside and outside of the organization. It's one of the three informational roles defined by Henry Mintzberg's managerial roles model, the other two being monitor and spokesperson.
For example, if a manager in a retail company learns about a new consumer trend that will impact sales strategies, as a disseminator, she would relay this information to her team so they can adapt their sales techniques accordingly. Similarly, if there are internal policy changes, the manager would ensure that these are communicated to the employees to maintain transparency and to adjust operations seamlessly.