I would say be entirely accurate. If you are legally married then choose that if you have completed the legal process and have the documents in hand to prove your status change then choose divorced. Anything else can be considered misrepresentation and you can be a serious issue.
That status is unrelated to who is traveling with you to Canada. You don’t have to include your spouse on the application if you don’t want to. You can select her an non-accompanying spouse so your points will be calculated as single. When you complete the legal process then inform CIC of the change of marriage status so you don’t have to comply with the requirements for an non-accompanying spouse.