If external site members should not see each other, what should you modify?

To ensure that external site members do not see each other, the correct action is to deselect Site User Visibility. This setting controls whether users can see the activity and details of other users on the site. When Site User Visibility is enabled, members of the external site can view other members, which could compromise privacy and confidentiality. By deselecting this option, you effectively limit visibility among users, ensuring that external members can engage with the site without being aware of other members' identities or activities.

Deselecting this setting is particularly important in environments where privacy is paramount, such as in collaborative projects involving sensitive information or where competitive dynamics are at play. It serves to create a more controlled interaction landscape, thereby fostering a stronger sense of security for all participants involved in the site.