There is not "i" in the verb to opt, despite being pronounced. So, correct is opto.
Now, the question of being with the no accent is already a question of phonetics. When we pronounce “opt” in the first person present tense, there is a stress in the first vowel “o”. But the truth is that if we were to follow the way we speak, we would write this verb like this: opitu.
Therefore, there is no “i” in any inflection of the verb to opt: I opt, he opts, I will opt, let me opt, when I opt, for us to opt.
So, taking up the prayer in the title, we have: I choose not to say anything else!
Ah, just one more observation: The gerund is “opting”, the participle “opted” and the infinitive “opt”.
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By Sabrina Vilarinho
Graduated in Letters
Brazil School Team
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Wanted or Quiz? - She didn't want or wanted to do that?
Verbal Doubts - Grammar - Brazil School
Would you like to reference this text in a school or academic work? Look:
VILARINHO, Sabrina. "Opt, opto or opto?";
Brazil School. Available in: https://brasilescola.uol.com.br/gramatica/opto-opto-ou-opito.htm. Accessed on June 28, 2021.