At a theater, a film's projection of 24 individual photos per second is perceived as motion. This perceptual effect is known as:

The Commission on Public Relations Education says

A) graduate degrees in public relations are worthless B) public relations education should focus solely on PR skills and problem-solving C) graduates should be responsible, flexible, and professionally oriented self-managers D) public relations and advertising education are part of a good marketing education E) it would be a lot more fun to run away and join the circus

How has the film industry tried to combat piracy?

What will be an ideal response?