Good things
1. Government can control market failure
2. It help optimize social welfare
3. It prevents monopoly
Bad things
1. Lack of efficiency
2. No rewards
The quantity theory of money predicts that the inflation rate will be 4% if the money supply increases by 6%, real GDP increases by 2%, and the velocity of money remains constant.
All the money and other liquid assets present in an economy on the measurement date are referred to as the money supply. The money supply roughly consists of deposits that can be utilized virtually as easily as cash in addition to actual currency.
Governments issue coin and paper money supply through a mix of national treasuries and central banks. By dictating to banks what reserves they must maintain, how to offer credit, and other financial issues, bank regulators have an impact on the amount of money that is available to the general people.
By regulating interest rates and altering the amount of money flowing through the economy, economists study the money supply and create policies based on it. Because the money supply may have an impact on price levels, inflation, and the business cycle, both the public and private sectors conduct analyses. The most significant determining factor in the money supply in the United States is Federal Reserve policy. The term "money stock" also applies to the money supply.
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Answer: Option (B) is correct.
Explanation:
Given that,
Reserve ratio = 25%
Fed reserve bank sells (securities) to public = $120 million
When a central bank sells the government securities to the public then as a result money supply in an economy decreases. This is an instrument of monetary policy known as " Open market Operations".
The supply of money is directly decreases by $120 million.
and
Money creating potential of banks = Amount of securities × 
= 120 × 
= 120 × 3
= $360 million
Hence, a decrease in money supply could eventually reach a maximum of $360 million.
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Welfare payment is an amount of money that is paid by the government to
someone who is ill,poor. Consumer subsidies is a grant assistance given
by one part for support
welfare payment is the amount of money paid by the goverment regularly
to assist the people of the country . it can be in a broader and
narrower sense. narrower sense reffers to the needy, ill, and
poor(social grant). the broader refers to everyone(public goods)