Final answer:
A white meson can be produced by any color paired with its anticolor. The correct combinations are red and antired, green and antigreen, blue and antiblue, which are RG, GB, and BR respectively.
Step-by-step explanation:
In particle physics, color combination refers to the theoretical aspect of quark composition in hadrons, such as mesons and baryons. These color charges are analogous to the primary and secondary colors in visible light, but baryons and mesons must be 'white' or color-neutral. For baryons, the only color combination that produces white is red, green, and blue (RGB). For mesons, which consist of a quark and an antiquark, the color combinations that produce white are each color alongside its anticolor: red and antired (cyan), blue and antiblue (yellow), and green and antigreen (magenta).
Given this information, a white meson can be produced by the following color combinations:
- Red and Antired (RG)
- Green and Antigreen (GB)
- Blue and Antiblue (BR)
Therefore, the correct answer to the question is: a) RG, GB, BR.