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The Event-driven behavior describes the environment of the system such as... O State Diagram Sequence Diagram O Usecase Diagram O Class Diagram The use case specification present only the user perspective Select one: O True O False The complicated source for requirement elicitation is... O Organization O A&B O Stakeholder O Document such as law The data dictionary provides in the requirement document as constraints Select one: O True O False The unambiguity and consistency appear in user requirements which to solve it use... O Conceptual Model O Questioner O System Context O Non of them The observation method is type of gathering information one of the aim ------ O Determine the actors type O Define the user requirement O Enhance the functional and Non-functional O All of them