Answer:
The correct word for the blank space is: states.
Step-by-step explanation:
Italian economist Vilfredo Pareto (1848-1923) proposed the 80/20 rule in which he explains 80% of the effects of anything are the result of 20% of the causes of something. When applied to the sales world, it implies 80% of an individual sales come from only 20% of the individual's customers.