Final answer:
The correct word to complete the sentence about acquiring fish products from another country is 'import', as it refers to the action of bringing goods into a country from abroad.
Step-by-step explanation:
The correct word to complete the sentence is 'import'.
So the completed sentence is: Why did your family import the fish products from that country? The verb 'import' indicates the action of bringing goods or services into a country from abroad for sale. When talking about fish or other products being brought into a country from another, 'import' is the appropriate term.
It would not be correct to choose 'choose', 'collect', or 'boycott' in this sentence. 'Choose' implies making a selection, 'collect' suggests gathering items, and 'boycott' means to deliberately abstain from using, buying, or dealing with as a protest. Only 'import' makes sense in the context of acquiring fish products from another country.