Final answer:
The preterite form of the verb 'ir' that fills in the blank is 'fue'.
Step-by-step explanation:
In the given sentence, the appropriate preterite form of the verb 'ir' would be 'fue'.
Example: Ella fue a una fiesta en casa de Damián.
'Fue' is the conjugated form of 'ir' in the third person singular.
Learn more about Preterite and imperfect verb forms in Spanish