What is the best way to change this sentence from passive voice to active voice? the course was being failed by half the students near the end of the school year.

Brancusi's well-known sculpture of a bird was intended to a. display the physical qualities of a bird. b. emphasize the relative size of birds to humans. c. show the calming attributes of birds. d. emphasize the graceful qualities of a bird. select the best answer from the choices provided a b c d