The local chapter of the American Red Cross has expressed concern because blood donations are down. It has received a report from the national American Red Cross, which shows why people are reluctant to donate blood. This report is an example of data.

Secondary data

Explanation:

Secondary data is the data collected by the researcher for investigation previously. This data can be assessed by the researcher. The secondary data is opposite or contrast to the primary data. Primary data is like the data collected directly.

The secondary is the data which increases the sampling data. It is the source of a large research project. The big source of secondary data is government libraries, internet, departments. Social media is the largest source of research. It is is the interest source for investigators.  

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the correct answer is :

{b.}   ( american workers lose job opportunities )

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    -sprinkles