Rebuilt

Hello everybody, it's me again. For background on my case, it is explained here Should I apply for citizenship? - US Citizenship General Discussion - VisaJourney Once again, I need your most kind advice and wisdom. I am seriously thinking of applying for citizenship, but for obvious reasons I am terrified of it. Maybe I am becoming a bit paranoid about the process and it's much simpler than I think it will be, but nevertheless I need to err with extreme caution. Previous to the statutory period (5 years) I have some unfiled returns. During those years, me and my ex-husband had no income to report, and I don't owe the IRS a penny. Nevertheless, in order to be 100% truthful to the question "have you ever not file a tax return since you became a PR?" I want to be able to say "NO", so I want to go ahead and file them anyway. It was my duty to do so anyway, even if I didn't know it at the time. I also want to avoid any uncomfortable questions that may arise during the naturalization interview due to not having filed said returns, such as how did I supported myself, or what was my livelihood during all those years. Plus, should a possible finding of abandonment arise, I can also have some leverage to counter such claim. I know there are forms available at the IRS website for each of those years, but the information I need is different, and I can't find the answer anywhere. At the time I was married to my husband, and I am currently divorced. So my question is: what should be my tax status??? I know at the present time is Single, but, what status should I put on a past tax return? Say, for example, 2012, when I was married to my husband and we were living together? Thanks in advance for your kindness and patience, I am really anxious over all of this.