Q: Read the following article and answer the question. Article: Today, home-ownership has reached extremely high levels. Modern generations tend to believe there is something wrong with them if they rent. However, is high home-ownership really as rosy as people imagine? Staring at data first, we realize that the most successful, stable, attractive country in the Western world is Switzerland. It has tiny unemployment; wealth; high happiness and mental-health scores. Does it have high home-ownership rates? Absolutely not. In Switzerland, about seven in ten of the population are renters. Yet, with Europe's lowest home-ownership rate, the nation thrives. Now go to the other end of the misery distribution. Spain has approximately the highest home-ownership rate in Europe (at more than 80%). But one-quarter of its population are unemployed. A likely reason is that high levels of home-ownership mess up the labour market. In a sensibly functioning economy it is easy for people to move around to drop into the vibrant job slots thrown up by technological change. With a high degree of owner-occupation, everything slows. Folk get stuck. Renters can go to new jobs. In that way they do the economy a favour. As Friedman said, the rate of unemployment depends on the flexibility of the housing market. Next we come to economic breakdown. Most analysts accept that at heart it was the housing market--obsessive pursuit of homes, the engendered mortgage lending and an unavoidable house-price crash--that sank the Western world. Germany, say, with its more efficient rental market, had a far smoother ride through trouble. As for the monetary system, in the past few decades, in the hope of getting untaxed capital gains way above their true labour earnings, many people threw their spare cash into buying larger houses or building extra bedrooms. TV programmes about how to make easy money, beautiful rising house prices, and most importantly, our falulty tax system encouraged that. When at some point market broke down, everyone suffered. Our countries ought, instead, to design tax systems that... Question: The cases of Switzerland and Spain prove that _ . Answer:

Options:
a). low home-ownership rate at about 30% is most favourable for economy.
b). home-ownership mainly decides a country's citizens' mental health..
c). home-ownership has a lot to do with a country's technological development.
d). low home-ownership increases the mobility of job market and economy..
A:
d).