If a research study reveals a difference between two groups that seems to be due to the independent variable but, in reality, the difference was due to some other variable that the experimenter didn't know about, there is a problem with

The fragmentation and individualization of our political system have made it less susceptible to the sway of ideas

Indicate whether the statement is true or false

A market economy encourages innovation because _____.

A. state ownership of enterprises reduces risks of innovation B. economic freedom leads to greater incentives for innovation C. government-owned and funded research centers become hubs of innovation D. the prices of goods and services, including new products, are fixed by government