Step 1: Understanding the Concept: 
The question concerns the evolution of Pahari miniature painting. The Basohli style was an early, vibrant, and bold style, which later evolved into the more delicate, lyrical, and naturalistic Guler-Kangra style. 
 
Step 3: Detailed Explanation: 
The transformation from the intense Basohli style to the refined Guler style began in the early 18th century. Art historians place the emergence of this new, softer style in the state of Guler around the years 1720-1730. This period falls squarely within the first quarter of the eighteenth century (1701-1725). This new style, characterized by its grace and elegance, laid the foundation for the mature Kangra school that flourished later in the century. 
 
Step 4: Final Answer: 
The transition from the Basohli style to the Guler-Kangra phase began during the first quarter of the eighteenth century. 
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