NAV Brasil ATCO (PTNA) Practice Questions - NAV Brasil Air Traffic Controller Public Competitive Hiring Examination - Profissional Técnico De Navegação Aérea (PTNA) Exam

In the phrase 'a aeronave à qual se refere o plano de voo', what justifies the graphic accent (crase) in 'à qual'?

The verb 'referir-se' requires the preposition 'a', and 'qual' is preceded by the contraction of that preposition with the article 'a' implied before the relative pronoun The accent is optional and purely decorative in formal writing The word 'qual' is a verb that always carries a circumflex The accent marks a pause for emphasis in spoken announcements

Correct Answer:

The verb 'referir-se' requires the preposition 'a', and 'qual' is preceded by the contraction of that preposition with the article 'a' implied before the relative pronoun

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