How to answer the first question "marital status" for a deceased person? I am trying to file tax return for my deceased wife (06/19). What was her marital status in Dec?

Sorry for your loss.

You would apply her marital status before her death, as this is what the CRA has on file. 

Please review the links provided below for more detailed information from TurboTax on filing a deceased tax return:

• Your Responsibilities as the Legal Representative of a Deceased Person
• How to Prepare Returns for Deceased Persons