Private ownership and free markets.
(You're welcome!)
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.
Answer: Robber Barons
Explanation:
It was how the great American businessmen were jokingly called by the population in the nineteenth century. Not that the problem was in their fortune. The thing is, they got rich at the expense of abuse and compromise with the government.
Women won the right to vote on August 18, 1920