Acurrency’s exchange rate is how many denominations the currency has. its stable rate as established by the government. how easily it can be divided into other currencies. its changing value relative to other currencies.

its changing value relative to other currencies.

  Its changing value relative to other currencies.

Explanation:  The exchange rate may be favourable or not, which depends on the currency value of a particular country. The value of the currency of a particular country depends on the economy, the general circumstances, and the type of market, state resources, etc. The state can with certain measures influence the improvement of the value of the currency and better currency’s exchange rate, but essentially it depends on the conditions of the market, production, that is, the economy as a whole. Depending on the value of a currency, for a certain amount of such a currency, a certain amount of some other currency may be obtained.

the answer for 3 is b and the answer for 4 is d