Why is it important for businesses to consider currency exchange rates?
a: they can dramatically impact profits.
b: neither side can negotiate price if the currencies are different.
c: determining costs requires complex formulas and an accountant.
d: they remain constant, so they need to be considered in the beginning.

Choose the sentence that is not logically connected in the paragraph. (1) one final effect of radio and tv on the language must must be noted. (2) there is no doubt that these great media of information have cut down considerably the time that used to be devoted to reading. (3) radio and tv may enhance the spoken word. (4) they tend to lower comprehension levels.