Answer:
correct answer is a. paradox of value
Step-by-step explanation:
the correct answer is a paradox of value and it is also known as diamond water paradox
like as marginal utility of diamond is very high in part
as it is use as celebrating of any life event
and it is also used for a signal by 1 person to another one as the commitment of both each other
so which thing has the highest value that is used frequently little/no value in the exchanging
and those have the highest value for exchange that have frequently little/no value use in value in use and value in exchange
so here the correct answer is a. paradox of value