The correct answer is To ask for.The word Petition means A formal message requesting something that is submitted to an authority.Ex: she was asked to sign a petition against plans to build on the local playing fields?The phrase To ask for is the closest phrase to the noun petition.Let's look at the meaning and examples of the given words: Words/phraseMeaningExampleTo blameA reproach for some lapse or misdeedhe took the blame for it.To refuteprove (a statement or theory) to be wrong or false; disprove.these claims have not been convincingly refutedTo rejectdismiss as inadequate, unacceptable, or faulty.union negotiators rejected a 1.5 per cent pay awardTo ask forto speak or write to someone because you want them to give you something.They asked their boss for more salary. Therefore, by reading the above explanation we find that the correct answer is Option 1.