George had good advice. You can read more about the free upgrade to member here.
George, unfortunately this is not correct. As well as upgrading membership by signing the Honor Code, Rae needs to make 100 contributions before being able to adopt orphaned profiles: see this Help page.
However Rae the news is not all bad. After you have signed the Honor Code, you will be able to attach to the profile even though you can't yet adopt it.