Answer:
c. a downward-sloping straight line.
Explanation:
In case when there is a three for one tradeoff lies between the X goods and Y goods so the curve of PPF should be fall sloping contains straight line. This slope should be downward as it generated more and more of one goods and it could be sacrificed for the other good and the reason of the straight line is that here the opportunity cost would remain the same or constant
Therefore in the given case, the correct option is C.
A straight line, downward - sloping demand curve often mean that, as price falls, there is an elasticity of demand. If there is always a three-for-one tradeoff between goods X and Y, then the PPF between X and Y is a Downward-sloping straight line.
It is simply known as where one thing increases, another have to decrease. it often arise from limitations of a lot of source.
It is often called a tactical or strategic choice made with full knowledge of the advantages and disadvantages of each decision.
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