A survey by the Economic Research Service of the U. S. Department of Agriculture, government statistics from the Department of Commerce, and stock market information from The Wall Street Journal would all be examples of,

This is an example of "EXTERNAL SECONDARY DATA".

Explanation: External data are those informations that we source outside the organization premises, which includes Information gotten from the market, internet, journal, and many more. It is an opposite to internal data, which means the data gotten within the organization.

Secondary data are those information we source from someones research, which we are not the original owners. It is an opposite to primary data, which means an information, that was not copied or duplicated from somewhere.

This is an external secondary data because, it has copied it's information from the "Wall Street journals". Which their are not the original owners of the data in the Wall Street journal and this information was not gotten within their organization.

They are all examples of secondary data of external sources of marketing research.

Explanation:

Sources of marketing research are divided into two which are the internal and external sources.

The internal sources of marketing research are informations gotten within an organization e.g. personnel, operations, finance e.t.c while external sources of marketing research are information gotten outside of the organization, this external sources are further divided into two which are the primary data and secondary data. The primary data are informations gathered by researchers from original sources e.g consumers, dealers, salesperson etc. While the secondary data are informations already collected, published by a researcher or an organization examples are information gotten from newspapers, journals, government publications and reports, surveys e.t.c.

answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;

i honestly speaking this is too long