Why was the Niger River important to the growth of the Mali Empire? It protected the Mali Empire from invasion.
It provided fertile farm soil and trade routes.
It served as a major source of salt and ivory.
It allowed Mali to trade on the Atlantic Ocean.

answer: i dont know

explanation:

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every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

hope this !

the answer is:

c. economic output