Explanation
The access levels that can be set on the Account Team Member are Account Access, Opportunity Access, and Case Access2. Contact Access and Contract Access are not available options for Account Team Members.

Explanation
Removing order delete permission from profiles and permission sets is the best approach to ensure that order records cannot be removed from the system in the future. This way, only users with the Modify All Data permission can delete order records. Option A is incorrect, since removing the delete button from the order page layout would not prevent users from deleting order records using other methods, such as data loader or API. Option B is incorrect, since changing the record type/page layout assignment for orders to be read-only would not affect the delete permission, but only the edit permission. Option D is incorrect, since implementing a sharing rule that changes access for the records to read would not prevent users from deleting order records that they own.

Explanation
The underlying issue for these users who don't see any of the accounts that were shared with the public group is that they are in profiles that have no access to the Account object. If a user does not have Read permission on an object in their profile or permission set, they cannot access any records of that object, regardless of any sharing rules or manual sharing. The page layout assigned to these users does not affect their record visibility, only their field visibility and layout. The permission set that only allows accounts in Active status does not affect their record visibility, only their record filtering. The accounts being owned by users higher in the role hierarchy does not affect their record visibility, as sharing rules can grant access to records owned by any user in any role.