The underlined structure in the excerpt “the reasons behi

#Questão 924842 - Inglês, Verbos | Verbs, FUNDATEC, 2023, BRDE, Assistente Administrativo

The underlined structure in the excerpt “the reasons behind the instability have remained a point of debate over the centuries” (l. 11-12) is in the present perfect tense. Considering this verb tense uses and the context in the article, we can say the action is/was: 

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