Answer:
Muybridge invented the zoopraxiscope in 1879, a machine that allowed him to project up to two hundred single images on a screen. In 1880 he gave his first presentation of projected moving pictures on a screen to a group at the California School of Fine Arts, thus becoming the father of motion pictures.
The answer is humor! It’s been shown it helps with all of those mentioned benefits :)
Chiaroscuro is Italian for<em> light and shadow</em>
Painters use this technique when they need to <u>create the illusion of light</u> on objects and people
I've attached a pic for example :D
The answer to the question is beat.