Who decides on the final form of the ballot text?

Tunisia
Basic Law on Elections and Referendums (2014)
Article 113
The electorate is convened to referendum by a presidential decree to which the text put forward for referendum is annexed. The decree and annex are to be published in the Official Gazette of the Republic of Tunisia.
Article 115
The question put forward for referendum should be phrased as follows 'Do you agree to the proposed amendment of the Constitution or the draft law presented to you?' The answer to this question is limited to approval or rejection.
Article 117
The rule of the majority of valid votes is the basis of announcing the results of the referendum.