He exchange rate between currencies of two countries should be equal to the ratio of the countries' price levels, and as the purchasing power of a currency sharply declines (due to hyperinflation) that currency will depreciate against stable

the correct answer would be b, when, queen, calder hall and london.

explanation:

we always capitalize words when a paragraph or sentence is starting, when an important name is used, when a place is being written, or simply when a noun is used, etc. so in this sentence, sentence is starting from 'when', so it will be written in capital letters. secondly, queen is considered to be an important person, so it will also be written in capital letter. next, the name of the town is mentioned, i-e calder hall, which will also be written in capital letters. in the last,   city name is being used, 'london', which will also be written in capital letters. so option b is the most appropriate one.

answer; buying the bill at a discount from the face value to be received at maturity;

answer/// there is an inverse relationship between price and quantity demanded;

paying attention to the details