The answer is D) "The Federal Budget is usually unbalanced." Just took the test and got it wrong so that's fun and fresh but this is the right answer, hope this helps.
The answer is <span>Western nations have guaranteed rights to most Middle Eastern oil fields.</span>
The best way to measure public opinion is through opinion polls - B
With opinion polls you get an idea what is the general idea about a certain topic from the public, as you usually get a high enough sample to deduce the relevant information.
To answer your second question I would say it is either B or C as being a sole proprietor usually makes you subjec to being a small business or you're forced to use factors of production less efficiently.
