The exchange rate is a) the price of one currency relative to gold. b) the value of a currency relative to inflation. c) the change in the value of money over time. d) the price of one currency relative to another.

D. the price of one currency relative to another

Explanation:

An exchange rate is the value of one nation's currency versus the currency of another nation or economic zone

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.

i would say iii (3) because in order to compare a price you have to use as a reference other near stores because it's its

hope i explained myself