Final answer:
The correct verb form to complete the sentence is "hable".
Step-by-step explanation:
The correct verb form to complete the sentence is C. hable.
The phrase "Os pido que" indicates that the verb should be conjugated in the subjunctive mood.
In this case, the verb is conjugated to agree with the second person plural pronoun "os", so we use the third-person singular form of the verb "hablar" which is hable.
Learn more about Conjugation of Spanish verbs