The correct answer is option 2, Guru Arjan Dev.
Guru Arjan Dev was the fifth Sikh Guru and he is credited with completing the compilation of the Adi Granth, also known as the Guru Granth Sahib. The Adi Granth is the religious scripture of Sikhism and it contains the teachings of the Sikh Gurus as well as compositions from other saints and religious figures from different backgrounds.
Guru Arjan Dev took on the task of collecting and compiling the writings of the previous Sikh Gurus and other poets and holy men into a single volume. He added his own compositions to the collection and organized the texts in a systematic manner. The compilation of the Adi Granth was completed in 1604.
It is important to note that while Guru Arjan Dev completed the compilation of the Adi Granth, the final and completed version of the Guru Granth Sahib, which includes the writings of Guru Arjan Dev`s successor, Guru Tegh Bahadur, was officially installed as the Guru of the Sikhs by Guru Gobind Singh, the tenth Sikh Guru.