A relatively small number of causes typically produce a majority of the problems and defects is a concept of ___________.

A.
Edward Deming

B.
phil’P Crosby

C.
Juian

D.
Pareto

Explanation:
Pareto law : A relatively small number of causes typically produce a majority of the problems and defects. This is called 80/20 principle , 80% of the problems due to 20% of the causes.