Why is government intervention into economic systems needed? 

A)  to ensure economic growth 
B)  to improve market success 
C)  to promote new economic ventures 
D)  to promote economic stability

Government intervention is needed to promote economic stability. This can be achieved through various means such as regulating the supply of money, controlling inflation, stabilizing the stock market, and preventing market failures. Without government intervention, there is a risk of economic instability, which can lead to recessions or depressions. Other options listed, such as promoting economic growth or market success, may also be goals of government intervention, but ultimately they are driven by the overarching goal of promoting stability in the economy.