Mail surveys have many disadvantages, so many marketers have switched to

The answer is Internet-based surveys
One of the most obvious disatvantages of mail surveys compared to internet surveys is the reach.
Mail surveys probably could only reach local region or nationwide (if the company is willing to spend a huge amount of money for distribution)
Internet surveys on the other hand, have global reach with basically no cost

It could be anything, recent improvements in technology/telecommunication/internet have increased the pace of globalization.generally, it has something to do with technology. globalization means that people around the world are brought together through technology which speeds things up. so maybe some of those options could be correct. : )