Hayek believed that the economy could be hard to measure because

a. individuals have the power to make decisions and are unpredictable.
b. individuals have the power to make decisions and are predictable.
c. government has the power to make decisions and is unpredictable.
d. government has the power to make decisions and is predictable.

Restricting immigrants from entering a country may be based on what belief?  

Should the city pass a ban on skateboarders on all public property, or are the citizens who oppose the ban right when they argue that there are benefits to having the skateboarders in public parks? plan and write a response in which you state your position and persuade readers to agree with you. support your position with reasons and examples drawn from the proposed amendment to ban skateboarding and from information in the letters to the editor, as well as from your own experience.

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?