A user needs a report that shows the main causes of customer churn rate in a three-year period. Which of the following methods provides this information?

Inferential analytics involves making predictions or inferences about a population based on a sample, which is not the primary goal when simply identifying past causes.

Descriptive analytics focuses on summarizing past data to understand 'what happened' and 'why it happened.' Identifying the main causes of customer churn over a three-year period directly falls under this category, as it involves analyzing historical data to explain past events.

Prescriptive analytics recommends specific actions to take to achieve a desired outcome, answering 'what should be done,' which is beyond simply identifying causes.

Predictive analytics uses historical data to forecast future events or trends, answering 'what will happen,' which is different from explaining past causes.