Stop cutting each brand of soap into different size pieces
D. is the answer as both statement 1 & 2 represents resource scarcity.
In statement 1 (Rapidly growing economies experience increasing levels
of water pollution), here the scarcity is of fresh water.
In statement 2 (There is a finite amount of petroleum in the physical
environment), here the scarcity of petroleum can be seen
Statement 3 is not scarcity because cassette tapes are not in demand any more so their production is been stopped.