Who grants sharing permissions in a Smartsheet account?

The correct answer is that the Sheet Owner grants sharing permissions in a Smartsheet account. The Sheet Owner has full control over the sheet, including the ability to define and manage sharing settings. This includes the capability to invite others to view or edit the sheet, as well as to set different permission levels for users. Permissions can range from view-only access to full editing rights, depending on how the Sheet Owner wishes to manage collaboration and data security.

While the System Admin and Account Admin have overarching control over account settings and user roles, they do not specifically manage sheet-level sharing permissions. Viewers, on the other hand, have no ability to grant permissions as their role is limited to viewing only. Thus, the ability to share sheets and control access is strictly a function of the Sheet Owner's responsibilities and authority within Smartsheet.