Answer:
The correct word for the blank space is: 250.
Step-by-step explanation:
American salesman Joe Girard (born in 1928) describes in his book "The World's Greatest Salesperson" the 250 law which implies anybody meets an average of 250 in the course of their lives. Under this idea, a salesperson could conclude that having a good relationship with each of those individuals could boost sales. The Girard 250 law tries to explain that is important to keep a good relationship with people -clients for salesmen, so they can refer us in the future.