Final answer:
The recommended color space for offset printing is CMYK, while RGB is used for digital displays. Grayscale is not suitable for full-color printing, and Pantone is used for spot color printing.
Step-by-step explanation:
In offset printing, the recommended color space is CMYK (Cyan, Magenta, Yellow, and Black). This color space is used because it can accurately reproduce a wide range of colors using a combination of these four ink colors. On the other hand, RGB (Red, Green, Blue) is commonly used for digital displays and is not suitable for offset printing. Grayscale is a color space that only uses shades of gray and is not typically used for full-color printing. Pantone is a proprietary color matching system that uses specific colors and is commonly used in branding and spot color printing.