why does it ask if i transferred my property to a spouse?

[TurboTaxSusan]

If you are referring to the Principal residence section, a (tax-free) transfer of a principal residence to a spouse, or a trust for a spouse (subsection 40(4)), can apply if the taxpayer (transferor) transfers their property to an eligible transferee. For more details on the automatic rollover, see CRA's Income Tax Folio S1-F3-C2, Principal Residence.