Answer: B. P10, P12, P16, P20.
Answer analysis: When discussing common outdoor display models, we need to consider the pixel pitch of these displays, because the pixel pitch is a key factor in determining the clarity of the display, viewing distance, and applicable scenarios. Now, let's analyze the given options one by one:
A. P6, P10, P25: Although P6 and P10 are more common in outdoor displays, P25 has a relatively large pixel pitch and is usually used for long-distance viewing or large outdoor billboards. However, since P25 is not as common in outdoor displays as more sophisticated models such as P10, this option may not be the best choice.
B. P10, P12, P16, P20: These models are common in outdoor displays. The pixel pitch of P10, P12, P16, and P20 is moderate, which not only ensures viewing clarity, but also maintains good display effects at a longer distance. These models are widely used in outdoor advertising, sports events, stage performances, and other occasions.
C, P8, P10, P25: Similar to option A, P8 and P10 are more common in outdoor displays, but P25 has a larger pixel pitch and may not be the most common choice.
D, P5, P6, P10: P5 has a very small pixel pitch and is usually used for indoor high-definition displays or outdoor displays viewed at close range. Although P6 and P10 are common outdoors, the addition of P5 makes this option more inclined to application scenarios indoors or at close range.
Considering the above analysis, option B (P10, P12, P16, P20) covers the most common and widely used models in outdoor displays. These models perform well in clarity, viewing distance and adaptability, and are very suitable for outdoor advertising, publicity and other occasions.
Therefore, the correct answer is B.