> D. the main problem with ads is that they stimulate more unnecessary consumption

Yes! If our culture(s) weren't so damned full of pure consumerism, forgetting the first 'R' in Reduce, Reuse, Recycle, we'd potentially be living in a healthier ecosystem.

And honestly, having gone from living with a hoarder to living with a tad more than essentials where I can see the damned floor in my house, it's such a f-ing relief.