A large mural decorates one wall of the community center. Some artist painted the mural last year. The mural shows groups of children singing, playing soccer, and reading books.

Which statement best explains why a writer might revise the second sentence to use passive voice rather than active voice?

The writer wants to emphasize how the mural is different from other murals.
The writer hopes to conceal the name of the artist who painted the mural.
The writer does not know the name of the person who painted the mural.