The answer is B: Companies entice their customers with great sale prices.
To entice means to attract somebody by artful means, even if the means are not necessarily ethical. In this case, it is customary for companies to attract people and convince them to buy their products by advertising bargains or good sale prices. Another way to put it is that, to entice, means to motivate someone into doing something that, without the motivator in place, would not be done.
First question Huh? I am pretty sure I read that book, I think it is the same as I read. Is this question in a test for you? Can you comment on this to explain? I want to help really. :)