Why would the author, charlotte perkins gilman ,choose to leave the main character without a name?

To keep the reader engaged because the reader may be hoping that a name gets introduced, whether or not it eventually does. also this allows the reader to be imaginative so they feel like they are one with the book which creates a stronger connection

It could be 1, 2, or 4, depending on the context.1.) they could have had a fight, and she is too humble to say anything further. she wants robert to say something first.2.) maybe he's staring at a computer playing tetris while she's wearing a *really* tight red dress. just sayin' xd3.) is unlikely given that it's only one sentence worth of context long. 4.) it's possible their relationship is more 'mutual hatred' and they tolerate one another.it could be 1, 2, or 4, as long as you can provide sufficient explanation why. remember this as you write!