India's long tradition of religious syncretism can be found in the poetry of:

Kabir Das

The correct answer is option 2: Kabir Das

Syncretism: A cultural phenomenon characterised by the inter-mingling or mixing of different religions or traditions. A hybrid of two distinct religious or cultural traditions.

Kabir's compositions drew from both Hindu and Islamic spiritual traditions, especially Bhakti and Sufi thought. The poems of Kabir, synthesising Hindu and Muslim devotion are cherished symbols of pluralism