It is the second choice
Quantity demanded equals quantity supplied
Climate change was the first thing that came to my mind for some reason
The rise and fall of fads will affect the equilibrium price and quantity for example if water was in short supply then the price will more than likely go up. Hope this helps!
Some good protests about marijuana laws could be that now in some hospitals or medical services allow to use it as medication. A bad protests are that some people would see it as a legal street drug.
