Which of the following monetary policy tools is more effective when the economy faces the interest rate zero-lower-bound problem?

Which of the following holds that economic decision making on all levels is unbiased and is based on all available information?

A) adaptive expectations based theory B) rational expectations based theory C) Keynesian cycle theory D) none of the above

How are the fundamental economic decisions determined in North Korea?

A) Individuals, firms, and the government interact in a market to make these economic decisions. B) These decisions are made by the country's elders who have had much experience in answering these questions. C) The government decides because North Korea is a centrally planned economy. D) The United Nations decides because North Korea is a developing economy.