Moderate

Which diagram in UML emphasizes the time-ordering of messages ?

Correct answer: B. Sequence

  • A. Activity
  • B. Sequence
  • C. Collaboration
  • D. Class

Explanation

A sequence diagram lays out messages along a time axis, making their order explicit from top to bottom. Collaboration diagrams also show interactions, but they emphasize object links and message numbering rather than time layout.

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