Final answer:
The direction at the end of Habakkuk's prayer in Habakkuk 3:19 is given to the director of music, indicating that the prayer is to be used in a worship service with musical accompaniment.
Step-by-step explanation:
The individual given directions at the end of Habakkuk's prayer is the director of music. Habakkuk 3:19 states, "The Sovereign LORD is my strength; he makes my feet like the feet of a deer, he enables me to tread on the heights. For the director of music." This indicates that the prayer or psalm is intended to be accompanied by musical direction, hence instructions are provided for the individual leading the musical component of the worship service. The prayer, which is a conversation with God, ends with an instruction for how it is to be used in the liturgical setting, namely under the guidance of the music director.