The procedure used to assure that all research participants have an equal chance of being assigned to each of the experimental conditions is called
a. experimental assignment.
b. random assignment.
c. control manipulation.
d. confound assignment.

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.

answer; obscene;

answer; the digital divide;

answerhumanism;