Understanding the argument -
Travel agents are market intermediaries who make their living by gathering, organizing, and dispensing information about travel-related services that are not readily available to most consumers. Fact
Through new information technologies, such as the Internet, much of this information can now be made directly available to consumers. Fact
Therefore, as more consumers gain access to these new technologies, demand for the services of travel agents will be drastically reduced. - Conclusion
What if there is some way that there'll still be demand for travel agenda? What if these information technologies provide a plethora of information that is difficult for the user to process? This is what option B does. In that case, the demand will continue. (I know we are doing our bookings without travel agents; it is pretty standard these days
But let's not bring in outside information, and let's stick to the argument for now)
Option Elimination -
A. Travel agents routinely use the internet and other new information technologies as sources for the information they obtain for their customers. Strengthener
B. The amount of information available through the internet and other new information technologies is increasing faster than the capabilities of most consumers to process it - ok
C. Many people use travel-related services, such as airlines and hotels, without consulting a travel agent. - Strengthener
D. The people who currently use the services of travel agents are also those most likely to gain access to new information technologies - Strengthener
E. The Internet and other new information technologies are currently used by a relatively small proportion of the population - Even 1% of 6 billion people is a significant number. Moreover, option E talks about now and the scope of our argument "demand for the services of travel agents will be drastically reduced," is about the future. And even if it's small today, it may increase in the future. Distortion.