you hear a commercial on the radio for a brand-new medicine guaranteed to boost immunity. which source is the least likely to provide accurate information about this product?

answer; buyer guide;

answer (b); /// a method of measuring the opinions of a large group of people by selecting a subset of the larger group, asking them a set of questions and then generalizing those responses;

the answer to the question :

which best describes a central bank's primary goals? limiting inflation and reducing unemployment reducing unemployment and maintaining cash flow controlling stagflation and reducing unemployment managing credit and ensuring the money supply's liquidity

is:

managing credit and ensuring the money supply's liquidity