Jackie attends a protest against animal testing. Which of the following secures her right to attend this protest?

The difference of results of random samples taken at the same time is a __________

Fill in the blank(s) with the appropriate word(s).

Select the factors that best contribute to labor and big business interests:

a. Protected markets and a labor force incapable of moving to gain better wages. b. Open markets and a labor force incapable of moving to gain better wages. c. Labor and capital movement from place to place, and from industry to industry. d. Protected markets and a labor force free to move from place to place.