Which of the following is a disadvantage of a sole proprietorship?
a. lack of permanence
b. legal constraints
c. difficult to start up

When copernicus changed the way we think about the solar system, he did so not by discovering new information, but by looking differently at information already available. edward jenner's discovery of a smallpox vaccine occurred when he shifted his focus to disease prevention from the then more common emphasis on cure. history is replete with breakthroughs of this sort?