Answer:
building up its supply of military weapons
Explanation:
In order to preserve and safeguard the four freedoms in a democratic country like the United States, it has to build adequate military weapons to counter the aggressive and Fascist regimes. A strong military might will ensure the security of the US in case it has to deal with aggressors and dictators. President Franklin D Roosevelt spoke four freedoms amidst World War II when Germany was aggressively pursuing war and to impose dictatorial regime under Hitler.
Am pretty sure the correct answer is C.
1,5,9 are correct.
Hope this helps!!