Rich is researching for an economics paper on the history of exchange rates between the us and great britain. the best choice for rich to use is a) currency converter. b) european central bank statistics. c) dollar-pound exchange rate from 1791. d) exchange rates: us$ and 41 currencies (historical).

D) Exchange Rates: US$ and 41 Currencies

Explanation:

This is because his research is based on historical facts .

By using all the other currencies rich is able to identifie the strennth of the currencies against each other.

The other reason is that the USD is the unit of measure on other currencies hence comparering it against other currencies then that of the pound makes it easier to identify how this currencies compare.

hello there!

the graphics that you have attached within the question, indicates that few people in bolivia work in industry according to its labor force.

however, the graphic that is on the right side of the picture shows the gdp sector in bolivia. this gross domestic product is a macroeconomic magnitude   that shows the monetary value of all finished goods and services within a country's borders in a specific time period. in this case, the graphic is showing the monetary value in each sector -agriculture, industry and services- of bolivia in 2012.

so, although the first graphic located at the left side indicates that not so many people work in industry, this is the second most important sector according to the gdp metrics because of the monetary value that impacts on its country. it does not need to be the most valuable one. if it makes an impact on the country's economy, it will be definitely crucial to it.