Why is unity sometimes regarded as the most important of all design principles?

a. unity governs the entire price of artwork
b. unity may be seen in only part of an artwork
c. unity provides diversity in the artwork
d. unity suggests the agreeable blending of elements

This isn't school related, but i need , i'm typing a story and i want to open with an omniscient limited point of view, where a woman with ptsd is dreaming and the reader doesn't know it's a dream yet. you even have to give me an opening sentence, but an example from a book with an omniscient limited point of view would alot. if you don't know what i'm referring to. "definition of third person limited. in third person limited the narrator only knows the thoughts and feelings of one character. all characters are described using pronouns, such as 'they', 'he', and 'she'. but, one character is closely followed throughout the story, and it is typically a main character."

In picassos masterpeice bulls head which bicycle part makes up the bulls horn

Albrecht durer, henri de toulouse-lautrec, and andy warhol used different techniques and process to get different effects in their prints. which print was made using lithography?