If you are under age 59-1/2, withdrawing contributions is tax-free but withdrawing earnings are subject to income tax plus penalties. You must keep track of contributions and certify to the IRS that you are only withdrawing contributions, and be able to prove it if audited. Your IRA custodian may have records.
If you are older than 59-1/2, all withdrawals are tax-free and Turbotax does not need to ask the question, it seems to be a holdover connected to a tax deduction that has been temporarily removed. You can make your best guess, it won't affect your tax and you won't be asked about it by the IRS.