Means that a patient accepts treatment after receiving a full and understandable explanation of the treatment being offered and making a decision based on his or her own judgment of the risks and benefits of the treatment.

the answer is

a) revise existing treaties

b) do away with political alliances

c) prevent the spread of communism

d) bring an end to european colonization

the main goal of the southeast asia treaty organization was to prevent the spread of communism in southeast asia.