Answer:
C. increases.
Explanation:
When there are more than one choices or alternatives and we choose one alternative among them, then the loss of the potential gain associated with the other alternatives when one choice is taken is known as opportunity cost.
A production possibility frontier is a curve or graph that shows the various amounts of any two products which can be produced when both the products depends on same finite source.
In the context, a society produces two products namely, beer and donuts. As the production possibility frontier moves up, producing more donuts by the society increases the opportunity cost for producing beer as the society produces both donuts as well as beer.
Hence the correct option is (C).
An outbreak of a disease that spreads through a community of people (Ex. Europe, Johannesburg, Missouri), some examples would be The Black plague, Ebola, or The common cold/the flu
And I think you meant EPIDEMIC
<span>The sun has six layers. Three layers, the corona, chromosphere and photosphere, comprise the sun's atmosphere or outer layer. The other three layers, convective zone, radiative zone and core, comprise the inner layers, or the parts of the sun that are not seen. <span>Fusion is the process that powers the sun and the stars.</span></span>
