<prompt> Human: I have a friend whose has a single parent. Her father died a few years ago. Right now the mother is trying to add the daughter to the 401k plan but it asks to choose a primary beneficiary. It asks if the mother is married or single, which option does she choose because she is widowed.  <response>: Sadly, she is single, on any forms, if widowed is not a choice. I suspect out of habit she chose married, and if it is an on line form it may confuse her with questions about spouse as beneficiary. : Condolences. 