Answer:
All of the above are true.
Explanation:
The law of diminishing returns was first formulated by the classic economist David Ricardo. It presupposes a technical relationship between input and output, which is not scientifically demonstrable but only empirically. In practice, in a generic production system, at any contribution of any factor, that is, land, labor, capital, machines, etc. there is no proportionally increasing production increase.
Normally it is assumed that the law does not always come into operation but only when the variable input exceeds a certain threshold. For example, the increase of workers on an assembly line certainly allows a proportional increase in production, but only until the entire system begins to suffer from malfunctions due to logistics or work organization, precisely because of the its getting bigger. Large industrial plants have shown that they must be divided into sections, however coordinated, precisely because of the decreasing returns. This is because the increase in the number of workers and the mass of the plants does not correspond to a consequent increase in production.
Answer: promote economic prosperity
Explanation:
Answer: b. people face trade-offs
Explanation:
From the question, we are informed that Bullie Jean has $120 to spend and wants to buy cither a new amplifier for her guitar or a new mp3 player to listen to music while working out.
We are further informed that the amplifier and the mp3 player cost $120, each and so she can only buy one. This shows that people face trade offs and have to make a choice regarding some decisions. Here, an opportunity cost will be the one that she didn't buy at the expense of the other.
