The pacific islands were used as a nuclear testing site between the 1940s and 1990s.

The Pacific Proving Grounds was the name given by the United States government to a number of sites in the Marshall Islands and a few other sites in the Pacific Ocean at which it conducted nuclear testing between 1946 and 1962. The correct answer out of the ones you listed above would be "True".

Explanation:

is a form of government in which the people have the authority to choose their governing legislators. ... In a direct democracy, the people directly deliberate and decide on legislation.

describes democracy as a system of government with four key elements: i) A system for choosing and replacing the government through free and fair elections; ii) Active participation of the people, as citizens, in politics and civic life; iii) Protection of the human rights of all citizens;