Final answer:
Having a large visible story board on a wall can attract viewers and engage them in the story being told.
Step-by-step explanation:
The effect of having a large visible story board on a wall is that it can attract viewers and engage them in the story being told.
When a story board is displayed on a wall in a larger-than-life size, it can capture people's attention from a distance and draw them closer to observe the details. This can create a more immersive experience and allow viewers to step into the story.