Tourism Was Not the Only Travel-Associated Industry to Have Been

Tourism was not the only travel-associated industry to have been visibly hurt by what happened on 9/11.People decided to vacation at home.Sales of luggage and similar travel gear decreased significantly,while sales of home swimming pools increased.The decision to stay at home reflects a change in attitude toward the perceived safety of long-distance travelling.What component of the general environment changed?

A) technological
B) sociocultural
C) economic
D) competitive