It should be formal! (answer b).
The hint in the question is that the city major will attend the ceremony- this tells you that the ceremony will have a more representative, formal character, and will not be an internal celebration among people who know each other (this would make it informal or semi-formal).
In a fully developed use case description the postcondition data describes the existence of domain model objects.
A postcondition in computer programming is a condition or predicate that, immediately following the execution of a certain line of code or an action in a formal specification, must always be true. In some cases, code-based assertions are used to test postconditions. Postconditions are frequently just listed in the affected code section's documentation.
Postconditions, together with preconditions and class invariants, are elements of the programme construction process design by contract in several software design methodologies.
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Governments typically establish population policies for all of the following reasons except "<span>C. to lower the standard of living for all citizens," since this would not be in the best interest of any group. </span>
