Hide menu items from non-authenticated user
Follow Below things:

1) Make sure that in admin/people/permissions "View published content", "view own Unpublished Content are "Unchecked" for the "anonymous user".

2)  Still if you are getting those "Disclaimer and Policies" menu links. 
   i) Create a  new menu and add those links in to that menu. While adding links Give the Parent menu link to "Main Menu". and save the menu.
   ii) Then admin/structure/block, configure the menu block: Give the permission to access only to Authenticated User  and save the block