What' s the author' s purpose in writing this passage?A.To show the inability of trains to
What' s the author' s purpose in writing this passage?
A.To show the inability of trains to compete with planes with respect to speed and convenience.
B.To stress the influence of the automobile on America' s standard of convenience.
C.To emphasize the function of travel agencies in market promotion.
D.To illustrate the important role of persuasive communication in changing consumer attitudes.