To refine the in-between motions, a computer animator uses a mathematical function called a(n)

The computer animator uses the function ‘tweening’, as this is being used in animation to resolve problems like having to refine in between motions or in between frames. It is a process of having to generate in betweening so that the animation will go smoothly and create the motion illusion.

spline

Explanation:

answer; i believe the correct answer is (general);

the first question's answer is a.