The correct option is 2 and 3 only.
Explanation
The Jodhpur School is a prominent style within the Marwar region of Rajasthani miniature paintings. It evolved significantly from the 17th century, culminating in a distinct stylistic phase in the early 19th century under the patronage of Maharaja Man Singh.
Statement 1 is Incorrect:
While the Ragamala painted at Pali is indeed one of the earliest dated examples of the Marwar style, it was painted in 1623 AD, not 1850. The year 1850 falls much later in the timeline of Indian miniature paintings, often coinciding with the decline of traditional courts or the rise of the Company School.
Statement 2 is Correct:
The last innovative and significant phase of the Jodhpur School occurred during the reign of Maharaja Man Singh (1803-1843). He was a devout follower of the Nath Sampradaya (a Shaivite sect). Under his patronage, the art style underwent a transformation, featuring monumental figures, spiral clouds, and distinct color palettes.
Statement 3 is Correct:
Reflecting the ruler's religious inclination, the paintings produced during Man Singh's reign predominantly focused on Nath themes. Significant sets commissioned during this period include the Nath Charita (1824), Siddha Siddhanta Paddhati, and the Shiva Purana.
Key Takeaway:
The Jodhpur School's early history is marked by the 1623 Pali Ragamala, while its zenith was reached under Man Singh, whose devotion to the Nath Sampradaya heavily influenced the subject matter (e.g., Nath Charita) and style of the paintings.