Exchange rates show the value of one country’s currency in relation to other countries’
a.

exports
b.

quotas
c.

currencies
d.

tariffs

 C. Currencies

Explanation:  All terms offered are economic terms. However, the exchange rate list gives us information about the value of one currency when we want it to be exchanged for another currency. The exchange rate can be variable on a daily basis, it can be stable for a longer period, which depends on the economic stability of the country. Even not so large changes in the currency compared to the currencies of other countries point to stability.

b) that he was not a free man

a.) are both appointed for life