1099-R Question- Did this money come from Roth IRA Y or N? Problem is it came from Conversion Roth Dividends Withdrawal, which is non-taxable Shall I answer Y or No?

there's no such thing as Roth dividends, conversion dividends or conversion Roth dividends

if it came out of a Roth, the answer is Y.

@candapabha 

This question likely results from entering a Form 1099-R that includes code B in box 7 of the Form 1099-R.  A distribution reported with code B is never from a Roth IRA.  (TurboTax should never even be asking this question since the code in box 7 already provides the answer.)

Code B or H in box 7 of the Form 1099-R indicates a distribution from a designated Roth account in a qualified retirement plan, not from a Roth IRA.  Only code J, T or Q in box 7 indicates a distribution from a Roth IRA.