Peter refuted the mockery of drunkenness of the disciples by referring to the prophecy of________

The correct answer is "Joel." Peter was speaking to the crowd on the day of Pentecost, after the Holy Spirit had come upon the disciples and they were speaking in tongues. Some people in the crowd accused the disciples of being drunk, but Peter explained that this was not the case. Instead, he pointed to the prophecy of Joel, which said that in the last days, God would pour out His Spirit on all people, and they would prophesy and speak in tongues. So, Peter was using the prophecy of Joel to show that the events of that day were not a result of drunkenness, but were the fulfillment of God's promise to pour out His Spirit on all people. This was a powerful way for Peter to refute the accusations against the disciples and to show that what was happening was a work of God, not the result of any human effort. In summary, Peter referenced the prophecy of Joel to show that the events of that day were a fulfillment of God's promise and not a result of drunkenness.