Which of the following is NOT the purpose of America’s central bank?

America’s Central Bank is part of a larger financial system called the United States Federal Reserve System. It is not a single bank, but a banking system with operations that are both public and private. Its purpose is to control the flow of money in the economy, to supervise banking activity and to protect the financial system.

US, Australian, and New Zealand scientists report in the journal Lancet that nine factors that people and societies can control cause nearly 2. 5 million cancer cases each year. That is about one-third of the seven million annual global total. Leading the list of causes is smoking, which the researchers say is responsible for 20 percent of preventable cancers. Alcohol use and low consumption of fruits and vegetables cause another five percent each. Also significant are overweight and obesity, physical inactivity, urban air pollution, indoor smoke from household cooking, contaminated injections in health clinics, and unsafe sex.