The fact that a few factors account for a high percentage of occurrence of some event is called the $\_\_\_\_\_\_\_\_\_\_$ phenomenon. Hint: the $80/20$ rule says that youll find that $80\%$ of your trouble comes from $20\%$ of the things you are doing; which of the phenomena below refer to the $80/20$ rule.Group of answer choicesCarlsbadYushchenkoParetoHindsightIliad