问题：
[单选题] It should go without saying that the focus of UML is modeling.However,what that means,exactly,can be an open-ended question.（ ）is a means to capture ideas,relationships,decisions,and requirements in a
A、Activity diagrams
B、Use-case diagrams
C、Structural diagrams
D、Behavioral diagrams
参考答案：
D、Behavioral diagrams
● 参考解析
