The correct answer is absolutely c
When any state or country operates with a "command economy", this means that the government, instead of the "free market" or consumers, is in charge of determining output and production quotas.
The correct answer among the choices is lingua franca. In multilingual
societies and populations, a lingua franca is adopted as a medium of
communication between people with different vernacular languages. Countries
like India and the Philippines with a post-colonial past and a plethora of
local languages use English as their lingua franca, for example.
A "Formal Amendment" is one that actually adds to or changes the US Constitution. It is ratified by the states and becomes law.
An "informal amendment"is a change to the meaning or interpretation of the Constitution of the United States. There is no real informal way to change the Constitution, and it's not an actual change to the wording of the Constitution; rather, it's the way we perceive the Constitution that changes.
The one that comes to mind is the equal rights amendment (1972) - which prohibits the inequality of men and women. Opponents say that the amendment is no longer needed, as the issues
