1. In the last few decades, the technology of travel has developed rapidly. In particular, flying
has opened up the whole world to the keen traveler. Moreover, in many countries, the cost of
flying is becoming more affordable to the average person. But the increased ability to travel has
brought many undesirable consequences, which people are becoming more aware of. For
example, increased environmental awareness may produce a feeling of guilt both in terms of the
pollution air travel causes and the environmental impact of visitors on tourist destinations. Other
travelers may be alarmed by the prospect of hi-jackings or terrorist attacks. Thus, the sheer
ability to travel will not necessarily lead to an increase in the amount of travel.
Which of the following is the best expression of the main conclusion of the above argument?