Question Type: General Knowledge/Computer Graphics

Step-by-step Solution:

To create animation effects in computer graphics, objects need to be moved and manipulated on the screen. This is achieved primarily through various transformation operations. These operations include:

• Translation: Moving an object from one location to another.
• Rotation: Rotating an object around a specific point or axis.
• Scaling: Changing the size of an object.
• Shearing: Skewing or distorting an object.

These transformations, applied sequentially or in combination, allow for complex animations. The other options are not directly related to the fundamental movement of objects:

• Line rasterization sequencing: Deals with how lines are drawn on the screen, not object movement.
• Phong model of lighting: Relates to lighting and shading, not object animation.
• Eigenvalue computations: Primarily used in advanced graphics techniques, but not essential for basic object movement.

Therefore, various transformation operations are necessary for moving objects and creating animation effects in computer graphics.

Core Logic: The core logic lies in understanding the fundamental operations required to change an object's position and orientation in a 2D or 3D space.

Eliminating Incorrect Options: The incorrect options are related to other aspects of computer graphics, such as rendering and lighting, but not the core process of object manipulation for animation.