D. You group like things, typing isn't really used in that sense, classifying is another word for grouping, but cataloging is and after action list
Answer:
potential energy: energy that is not released yet
ie. a yoyo before it's released, a book on a table before it falls, a roller coaster on the peak before it falls
kinetic energy: released energy
ie: moving car, windmill in motion
The answer i got was B.:Extrinsic
I hope this will help u :D