50
(A)Travel was considered an essential part of education, which led to the emergence of travel writing.
(B)And it is this which is the central characteristic of mass tourism in modern societies.
(C)There have always been periods in which much of the mass of the population have engaged in play orrecreation.
(D)This is not to suggest that there was no organized travel in premodern societies, but it was very much thepreserve of the elite.