What is the role of the government in a command economy? The government makes all economic decisions.
The government allows private ownership of resources.
The government gives individuals the power to set prices.
The government encourages competition to produce goods.

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?