Final answer:
The correct verb form to fill in the blank is 'deshago'.
Step-by-step explanation:
The correct verb form to fill in the blank in the sentence is deshago.
This is because the subject 'yo' (I) requires the verb form 'deshago' to match in the first person singular. The other options are incorrect because they do not match the subject and verb form correctly.
For example: Tú deshaces esta confusión, y yo deshago los planes para la fiesta. (You untangle this confusion, and I undo the plans for the party.)
Learn more about Spanish verb conjugation