Step 1: Understanding the Concept: 
The question asks to identify the artist of a specific painting from the Bikaner school of Rajasthani miniature painting. 
Step 2: Detailed Explanation: 
The Bikaner school was a major center of Rajasthani painting, known for its fine lines, subtle colours, and strong Mughal influence. One of the most important master artists of the Bikaner school during the 17th century was Nuruddin. He is credited with painting several masterpieces, including the famous work titled 'Krishna on a Swing with Radha in a Melancholy Mood' (or similar variations). This painting is a classic example of the Bikaner style, showcasing a delicate blend of Mughal refinement and Rajasthani emotional content. The other artists listed are from different schools:
\[\begin{array}{rl} \bullet & \text{Nainsukh and Pandit Seu were masters of the Pahari school.} \\ \bullet & \text{Dana was an artist from the Kishangarh school.} \\ \end{array}\]
Step 3: Final Answer: 
The painting was created by Nuruddin of the Bikaner school.
| List I | List II | ||
| A. | Falcon on a Bird Rest | I. | 1937 | 
| B. | Zebra | II. | 1615 | 
| C. | Krishna as envoy | III. | 1621 | 
| D. | Dhaki | IV. | 1906 | 
Rearrange the following parts to form a meaningful and grammatically correct sentence: 
P. a healthy diet and regular exercise 
Q. are important habits 
R. that help maintain good physical and mental health 
S. especially in today's busy world