What is one example of a closed economy

One example of closed economy is Brazil.

Explanation:

Closed economy is the one that does not interact with the economies of other countries; it does not allow imports and exports. The concept of closed economy relates to self-sufficiency, however,  it does not exist a country with a totally closed economy. For example, Brazil IMPORTS the least amount of goods as possible in the world in order to protect the internal market. Hence, we could not say that Brazil does not import anything.

- "ethical issues. deception – the participants actually believed they were shocking a real person and were unaware the learner was a confederate of milgram's. however, milgram argued that “illusion is used when necessary in order to set the stage for the revelation of certain difficult-to-get-at-truths.” "

- "milgram's work was conducted in the early 1960s before the current.the studies ignited a debate about the ethical treatment of participants. what appear to be dangerous, if not deadly, electric shocks and the by today's ethical standards, many questions about the research have gone unanswered."

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.