B. More basketball players wear Slam Dunk shoes than any other brand.
Something that is implied is not directly stated. This means that you need to "read between the lines" or assume what the speaker wants you to do. For the rest of the options the call to action is directly stated. In A, the call to action is to vote for Rodrigo Noriega. In C, the call to action is to buy Great Grain goods. In D the call to action is to go to the auto show. In option B the speaker wants you to buy Slam Dunk shoes. However, he doesn't just tell you to do it. Instead, the speaker lets you know that they are the shoes most basketball players wear. The thinking is that if you're looking for basketball shoes, you'd want the ones that everyone else gets, because they are most likely the best.
