I am pretty sure it is C but correct me if I'm wrong hope this helps.
Answer:
regional network
Explanation:
The market is a set of buyers and sellers who agree on the prices at which they will exchange goods and services.
In the economies of the third-world, products are usually put to the periodic market. Periodic markets are the biggest element of the marketing system.
The basic elements of the market are price, demand, supply, income.
The majority of the smaller islands in the Pacific are made up of build-up of coral deposits.
<h3>What do we find in the smaller islands of the Pacific?</h3>
Even though these islands are usually created as a result of volcanic activity, we find that they are composed of coral deposits.
These coral deposits come about as a result of a buildup over centuries which made these islands quite important in preservation efforts.
Find out more on coral deposits at brainly.com/question/13195203.
#SPJ4
Because many rivers run swiftly down int mountains.
Hope that helps