In animation, what is a keyframe?
A.
The method of changing one image into another through a seamless transition.
B.
A technique to determine bone positions.
C.
A rotoscoping technique.
D.
The starting and ending points of a transition.
Explanation:
http://msdn.microsoft.com/en-us/library/ie/hh673530(v=vs.85).aspx#create_the_keyframes