Select the correct answer from each drop-down menu. Choose the correct answers to complete this paragraph on use case diagrams.
In a use case diagram, the ( 1 )
are represented mostly by human figures. The ( 2 )
describe the function, enclosed in an oval. These components are connected by ( 3 )
that are represented by ( 4 )

1. relationships, actors, use cases, functions
2. actors relationships, functions, use cases
3. functions, relationships, actors, use cases
4. arrows, dotted lines, dashed lines, ellipses
.