Lights

A series of still photographs projected onto a screen by light (correct)

A complex art form that requires contributions from all other arts

A medium for conveying drama and emotion

All of the above

At the beginning of the 20th century

At the beginning of the 19th century

At the end of the 19th century (correct)

At the end of the 20th century

Painting, sculpture, and architecture

Writing, journalism, and advertising

Dance, music, and theatre

Sound recording, photography, and optics (correct)