By how much did the number of mortgage-financed ownership households change between 2001 and 2011?

The correct answer reflects a significant decline in mortgage-financed ownership households between 2001 and 2011. This period was marked by a considerable housing market downturn, particularly due to the subprime mortgage crisis, which began in 2007 and led to a recession. As a result of increased foreclosures and a decrease in home values, many households found themselves unable to maintain their mortgage payments, leading to a substantial number of ownership households switching to renting or facing dislocation from their homes.

The reported decrease of 749,000 mortgage-financed ownership households is indicative of the broader economic challenges faced during this decade, as many individuals and families struggled with financial hardships that directly impacted homeownership rates.