Answer:
I would think its isolationist
Explanation:
I believe the answer is: double-blind experiment
In double blind experiments, the subjects that receive the treatment is remained unknown by both the researchers and the subjects until the experiment is finished. The main purpose of double-blind experiment it eliminate the bias of perception that might exist among researchers.
Answer: D. An economic system characterized by voluntary allocation
Explanation: Socialism promotes or encourages the need for production, distribution and exchange to be run by community at large instead of only the government running the affairs of the community.
Socialism is a shared responsibility for the production and distribution of resouces between individuals in the community or a group. It is the economic and political theory that encourages individuals to do things collectively for the common goal of the society.