The best insulators for a handle on a pot or pan that is used on the stove would be C) wood or rubber.
Wood is a poor conductor of heat, meaning it doesn't transfer heat well, making it a good choice for handles that should remain cool to the touch. Rubber is also a poor conductor and provides a good grip, and it helps to insulate against heat.
In contrast, steel, copper, and other metals are good conductors of heat, which would not be suitable for a handle that should remain cool.