Resolved - Yahoo Telephone Support
Thanks to the information from unkfrank my friend was able to call the toll free Yahoo support number. After verifying information, the password has now been reset and sent to an alternate email address for the user.
I had a similar circumstance with Gmail a couple of weeks ago, and managed to remember the password. But they too have an "alternate email address" feature, but my alternate email address was no longer live. Also with Gmail if the alt email does not work, you have to wait about 5 days before you can answer the security questions. I was not able to find a Google tel#, and in some searching the procedures were not really in place for such an issue.
These anecdotes might remind us its good to check the settings buried in your email accounts, etc.