Final answer:
Shifts in time, mixed media, minimalistic production values, and reverse chronological ordering of scenes are conventions of modern art.
Step-by-step explanation:
Shifts in time, mixed media, minimalistic production values, and reverse chronological ordering of scenes are conventions of modern art. These conventions emerged in response to the desire of artists to capture the dynamic and fleeting nature of modern life. For example, artists such as the Cubists and Futurists sought to depict simultaneity and speed in their works, while performance artists like Yoko Ono challenged traditional art forms by turning everyday activities into public spectacles. These conventions continue to be explored and expanded upon by contemporary artists.