100 points !
people can telecommunicate through

a. written messages delivered overnight by postal service mail carriers

b. magazine advertisements.

c. computers, telephones, and other electronic devices.

d. posters, billboards, and other public signs.

ddd    idk or c

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.