Answer:
Disseminator
Explanation:
Under disseminator managerial role, the manager is concerned with transmission of information received from outsiders or insiders to other members of the organization.
The role involves forwarding of mails, reviewing of sessions with subordinates, etc. It involves communication of important information with colleagues and team members.
In the given case, Joella, the marketing manager reports to her supervisor via e-mail, the extent to which her team has met the targets and the difficulties encountered in meeting the targets. Thus, Joella is serving in the disseminator managerial role wherein, she communicates important information via mails and reviews the work performed by her subordinates.