Answer :
The total dollar volume of U.S. travel agencies (including OTAs (online agencies) over the past decade has option (a) i.e, made dramatic growth.
What is a travel agency?
A travel agency is a private business or government organization that offers the general public travel and tourism-related services on behalf of lodging or transportation providers in order to offer various travel bundles for each destination. Outside recreation activities, airlines, car rentals, cruise lines, hotels, trains, guidebooks, travel insurance, package tours, insurance, access to VIP airport lounges, public transportation schedules, vehicle rentals, and currency exchange services are all things that travel companies can offer.
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