Which sharing option should a user select for a project team from multiple organizations with access constraints?

Selecting "Organization" as the sharing option is appropriate for a project team that consists of members from multiple organizations with access constraints. This option allows the data or project to be shared with all users within a single organization. In scenarios where sensitive or proprietary information is involved, sharing with "Organization" ensures that only individuals who are part of that specific organization can access the materials.

In cases with members from different organizations, sharing exclusively with one organization can still serve as a means to maintain control over the information and limit access, aligning with the constraints mentioned in the question. This setup is particularly important in collaborative projects where information security and access control are critical.

Choosing "Everyone" would allow unrestricted access to all users, which does not fit the requirement for access constraints. Meanwhile, selecting "Group" could limit access if the group is not adequately defined or composed only of members from one organization. The "Organization and Group" option may introduce unnecessary complexity if the intent is to maintain clear boundaries based solely on organizational affiliation.