Jacques manages a grocery store in a country experiencing a high rate of inflation. To keep up with inflation, he spends a lot of time every day updating the prices, printing new price tags, and sending out newspaper inserts advertising the new prices. His employees regularly deal with customer annoyance over the frequent price changes. This is an example of the of inflation.

a. menu costs

b. shoe-leather costs

c. unit-of-account costs

a. menu costs

Explanation:

Menu Costs of inflation are the costs associated with sellers and suppliers having to update their prices whenever they increase.

This is the cost of making new tags, updating catalogues, updating websites and anything that has to do with updating price.

It gets it's name from Restaurant menues having to be reprinted when prices rise.

Jacques is experiencing Menu Costs.

client registration system, resource management system, clinical management system, patient information database, common use-system interface

explanation:

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'