In terms of mercantilism, what is protectionism?

Aa political policy that states that a nation should take over foreign ports by force if necessary to insure healthy trading relations
Ban economic policy in which a nation spends a great deal of money on its navy in order to defend it merchant ships
Ca trade policy that involves undercutting the prices of other an nation's goods at all costs
Da trade policy the encourages exports while discouraging imports, mainly through tariffs

Verified Answer :

The answer is letter d.
a trade policy that encourages exports while discouraging imports, mainly
through tariffs.  Both systems
stress the need to get the most advantage exporting more but limiting imports
to get the most profits. Both systems also want to protect their own interests
when it comes to the accumulation of wealth.

The answer is D because i took a test on it and got 100%