The correct answer is option 2: Guru Ram Das. Guru Ram Das was the fourth Sikh Guru and he laid the foundation of Amritsar. He started the construction of the Amrit Sarovar (Pool of Nectar) in the 16th century. Amritsar, which translates to "Pool of Nectar" in English, is now a major pilgrimage site for Sikhs. Guru Ram Das also established the Central Sikh worship place called Harmandir Sahib, which is famously known as the Golden Temple. He believed in promoting equality and inclusiveness, and he encouraged followers from all walks of life to come together and worship. Guru Ram Das played a significant role in the development of Sikhism and the establishment of Amritsar as a spiritual and cultural center for the Sikh community.