Final answer:
The appropriate form of the verb ser to fill in the blank is 'soy'.
Step-by-step explanation:
The correct form of the verb ser to fill in the blank in the sentence 'Es verdad que yo_________ de Argentina' is 'soy'.
Example: Es verdad que yo soy de Argentina. (It is true that I am from Argentina.)
Step-by-step explanation:
In this sentence, the subject 'yo' (I) requires the first person singular conjugation of the verb ser, which is 'soy'.
- ser is the infinitive form of the verb (to be).
- seas is the second person singular present subjunctive form, which is not appropriate in this context.
- sea is the third person singular present subjunctive form, which is not appropriate in this context.
Learn more about Conjugation of the verb ser in Spanish