They were simple, it's true...but they were too simple. Economics doesn't have very many questions that fall into the category of "2+2 = ?", and these were not that kind of question. They were too general to conclusively pick a right and wrong answer, IMHO. But we can agree to disagree.
On the other hand, I will say that the CHOICE of questions was entirely biased. Knowledge of economics wasn't necessary for conservatives to get the "right" answers, since ALL of those questions were based on common conservative ideology. I doubt many people polled could have drawn upon any economic knowledge to explain WHY their answers were "correct", their answers just nicely lined up with conservative talking points. Free trade = good. Regulation = bad. With little else, you could have answered those questions exactly as the pollster wanted you to. That seems like a poor test of knowledge to me.
so here are the questions asked...
1) Restrictions on housing development make housing less affordable
2) Mandatory licensing of professional services increases the prices of those services
4) Rent control leads to housing shortages
doing anything to restrict supply will make prices increase. This is not debatable.
3) Overall, the standard of living is higher today than it was 30 years ago
By almost every metric people are far better off today than 30 years ago. Products are generally cheaper and better and we enjoy a much higher standard of living.
5) A company with the largest market share is a monopoly.
There is textbook answer for this question and not open to debate.
6) Third World workers working for American companies overseas are being exploited
I could see there being room for debate there. However most workers are doing far better with their new exploitive job over whatever they did previously.
7) Free trade leads to unemployment
I can see there being debate here, but protecting one industry often hurts others.
8) Minimum wage laws raise unemployment
this is one the known side effects of minimum wage laws. It does decrease employment. When you raise the price of something, there is less demand for it.
I dont find these question to be particularly biased, but I guess you do. And of course, maybe was always an answer.