Thanks for the question! So let’s walk through the stimulus first. TV executives are basically saying advertising time is going to get more expensive. But despite that, advertisers are still going to profit, and so they conclude, advertising time will be no harder to sell next fall.
So now we’re looking for something that’ll support this argument. Anything that strengthens the idea that advertising time won’t be harder to sell next fall will do this. So something that shows that advertising is profitable would do this. Now take a look at (E). It tells us that a recent survey shows that the average number of hours people spend watching TV increases at the rate of 2% every two months. Well, if more people are watching TV, that certainly helps the idea that advertising will still be profitable, and so it strengthens the argument. It doesn’t guarantee it, but it does support it more than the other answer choices, and that’s what makes (E) correct.
Hope this helps! Feel free to ask any other questions that you might have.