Answer:
False
Explanation:
Ludwig was a social psychologist who proposed two type of system such as closed system and open system. The closed system is to be held alone or isolated from the environment. There is equilibrium thermodynamic is a system that is used or applied for the closed system.
On the other hand the open system is like that allow their internal to interact with their environment. Open system is just like that allow internal matter to interact with an environment. For example import, export, breaking, building, and material components.
Option A
Explanation:
A design of plane
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The correct answer is letter B. The method of ranking social status that asks people to rank themselves is called subjective method. This is where people are asked to rate themselves and their current status in society. This is a common practice used in surveys performed by many governments around the world.