Thanks for the question! So remember, we have to assume the claims made in the advertisement are true, and then find what has to be true based on assuming they are true (this is a Must Be True question).
So what does the advertisement tell us? Well, you make a statement about the person you are by the car you own. Forget about whether or not this makes sense in real life, this is what the stimulus tells us, and the stimulus is gospel for our purposes.
And then we’re told what the message of the SKX Mach 5 (presumably a car) is: the message tells us that its owner is Dynamic, Aggressive, and Successful. So basically, if you buy a SKX Mach 5, you’ll give off that message about yourself, in other words
Buy SKX Mach 5 —> Make statement about how you’re Dynamic, Aggressive, and Successful
So now what has to be true based on these statements? Well, take a look at (B). If someone who’s not both dynamic and successful buys a SKX Mach-5, then they’re misrepresenting themselves. This is true based on what we diagrammed above, since you represent yourself as both dynamic and successful if you buy a SKX Mach-5, and it’s a misrepresentation because you’re not actually dynamic or successful. So (B) must be true based on what we’re told in the stimulus, and (B) is the correct answer choice.
Hope this helps! Feel free to ask any other questions that you might have.