Use the information to answer the following question.

Indonesia and Vietnam both rank in the top 10 in the world in terms of navigable waterways.

Why is this important for the citizens of those countries?

A.
Waterways are primary sources of transportation since there are no airports in either country.

B.
Waterways are important for recreation, but do not serve an economic purpose.

C.
Waterways are used for religious rituals and purposes.

D.
Waterways provide jobs and are important means of transportation.