Final answer:
The question asks about a 'maximum practical distance to travel in terms of stories' without context, making it difficult to provide a concrete answer.
Step-by-step explanation:
The question seems to be asking about a practical limit for something related to building stories, possibly concerning height estimation or vertical distance that can be practical or safe to travel. However, without context or a specific scenario, it is difficult to determine what exact 'maximum practical distance to travel in terms of stories' is being referred to. It's worth noting that in the study of tall buildings, the numbef of stories can serve as a rough estimate of height, where each story is typically around 3 meters or 10 feet tall. Given multiple-choice options, it is likely referring to a standard or guideline, but without additional context, it's impossible to provide a direct answer to this question. Nevertheless, an understanding of approximate building heights and human perception for vertical spaces can both play a role in how we gauge 'practical distances' in vertical structures.