A civil war was forming in china that eventually left 10-30 people dead and the Chinese started to form their military also the wu-han virus started to take place.
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.
New England's strong religious values restricted settlement far from the center of town, while Virginia's pursuit of wealth pushed settlers to the coast, and away from others.
