What is the primary purpose of the 'extend' relationship in use case diagrams?Mark(3 Marks)(Choose one option)To indicate that a use case can include the behavior of another use caseTo show a generalization relationship between use casesTo depict optional functionality that extends the behavior of a base use case under certain conditionsTo model actor hierarchies

In a UML Use Case Diagram, what does an <<extend>> relationship signify?Mark(Choose all possible options)Optional additional behavior in a Use Case Inheritance between Use CasesA mandatory relationship between actorsA bidirectional association between actors and Use Cases

In use case modeling, what is an "extend" relationship used for?a.To show the optional paths of execution in a use caseb.To represent a generalization relationship between use casesc.To indicate that one use case includes the behavior of anotherd.To illustrate alternative scenarios within a use case

Which of the following best describes the purpose of an extend relationship between use cases in a use case diagram?A.To demonstrate the flow of control from one use case to another.B.To show that one use case includes another use case.C.To represent the exceptional or optional behaviour of a use case.D.To define the interactions between actors.

What is the purpose of the "Association" relationship between two use cases in a use case diagram?a.To illustrate a communication link between two use casesb.To indicate a dependency between the use casesc.To model the relationships between classesd.To show that one use case is an extension of another

What is the relationship between a use case and an actor in a use case diagram?a.Dependencyb.Associationc.Aggregationd.Inheritance