正解:D
Explanation
The most useful analytical method when trying to identify groups with similar behavior or characteristics in a large population is classification. Classification is a technique that assigns data points to predefined categories or classes based on their features or attributes. Classification can help to discover patterns, trends, and relationships among the data and reveal the similarities or differences among the groups. Classification can also help to support decision making, prediction, or recommendation based on the data analysis. References:
CISA Review Manual (Digital Version), Chapter 3, Section 3.4.21
CISA Online Review Course, Domain 2, Module 3, Lesson 12