Cel animation, and live footage of people or. are usually combined together on the computer using footage in front of a
a. pyrotechnics; stunt actors; screenshot.
b. cgi; miniatures; green screen.
c. rotoscoping; animated footage; projector.
d. makeup; puppets; composite screen.

cel animation, and live footage of people or. are usually combined together on the computer using footage in front of a .

B. CGI; miniatures; green screen.

Explanation:

CGI stands for computer generated imagery that is an application which is used to add visualizing content in the videos, films, commercials, etc.Miniatures refer to the models that are used in the production of animations or different videos.Green screen is used in the background during the making of a video so that we can add required background when needed.

So, CGI cel animation, live footage of people or miniatures are usually combined together on the computer using footage in front of a green screen.