Explanation:

- Padavali Kirtan refers to devotional songs sung primarily in the region of West Bengal during the medieval period.

- These kirtans were an important part of Bhakti movement and used for expressing deep devotion.

- These were mainly composed to praise Vishnu, specifically His incarnations like Krishna.

- Option 1: Shiva is another significant deity but not the main focus of Padavali Kirtan.

- Option 2: Shakti represents the divine feminine power but is also not the primary subject here.

- Option 3: Vishnu, particularly His incarnations like Krishna, is the central figure of Padavali Kirtan.

- Option 4: Brahma, while a creator deity, is less commonly worshipped in kirtans than Vishnu.