The correct answer is: Raja Govardhan Chand.
Guler painting is a style of Indian painting that flourished in the Guler region of the Himalayas from the 17th to the 19th centuries. The style is characterized by its use of bright colors, delicate brushwork, and idealized depictions of nature and human figures.
The Guler style of painting reached its zenith during the reign of Raja Govardhan Chand (1695-1748). Under his patronage, the Guler court atelier produced some of the finest examples of the style. The paintings of this period are characterized by their exquisite beauty and technical perfection.
Raja Raj Singh (1645-1684) was the ruler of Guler from 1645 to 1684. He was a patron of the arts and literature, and he commissioned many paintings from the Guler court atelier. However, the style of painting that flourished during his reign was not as refined as the style that developed under the patronage of his successor, Raja Govardhan Chand.
Raja Dalip Singh (1748-1783) was the ruler of Guler from 1748 to 1783. He was a patron of the arts, but he did not have the same interest in painting as his predecessors. As a result, the style of painting that flourished during his reign was not as innovative or as technically accomplished as the style that developed under the patronage of Raja Govardhan Chand.
Raja Hair Chand (1783-1803) was the ruler of Guler from 1783 to 1803. He was not a patron of the arts, and as a result, the style of painting that flourished during his reign declined in quality.