The correct answer is letter D.
Explanation: In this case the two grocery wants to sell their products, as a result they are gonna represents many products, because they are two. And they of course wants to sell their products, so they are gonna lower the prices for sell.
The consumers can buy more, with a lower price.
The statement above is talking about the Drive Reduction Theory. This theory, proposed by Clark Hull in 1943, talks about a certain drive that develops when a disturbance occurs in an individual's homeostasis or simply put, when someone has physical needs that need to be met.
They all refer to the different types of government systems there are. An example would be that the United States has a a federal government system because both the state governments and national government share equal power.
It's called condensation.