Final answer:
The essay's main idea likely pertains to the personal significance of art, represented by Vincent van Gogh's 'Starry Night,' which is described as containing a dynamic dance of colors and was painted in 1889. The painting's cypress tree symbolizes a link between earth and the cosmos, and the transformative power of art is characterized by its emotional impact.
Step-by-step explanation:
The main idea of the essay appears to revolve around the personal definition of art and its tangible embodiment, as signified by Vincent van Gogh's eminent painting, Starry Night. This work is described as a cosmic dance of colors in the nighttime sky, suggesting an answer of 'b. A cosmic ballet of blues and yellows' to how the author depicts Starry Night. Further, the painting was created in 1889. As for the symbolism of the cypress tree in the painting according to the essay, it is suggested that it represents 'a. A connection between the earthly and the celestial.' Lastly, the transformative power of art, as per the essay's context, is its capability to spark introspection and evoke a spectrum of emotions in its audience, thus the answer is 'b. The capacity to provoke thought and evoke emotions.'