According to the 80/20 rule, what percentage of causes typically contribute to the majority of issues?

The 80/20 rule, also known as the Pareto Principle, states that approximately 80% of effects come from 20% of the causes. This principle is widely applicable in business processes and problem-solving scenarios, where a small number of causes often lead to the majority of the problems or variations observed. In this context, the correct interpretation of the 80/20 rule indicates that 20% of causes are responsible for 80% of the issues. Thus, recognizing and focusing on that critical 20% can lead to significant improvements and more effective solutions.

In light of the options provided, the choice reflecting 20% directly aligns with the tenets of the Pareto Principle, making it clear that a majority of effects stem from a small proportion of causes.