There is no strict rule regarding the length of paragraphs in a story, as it can vary based on style, pacing, and the medium. However, many writers suggest keeping paragraphs concise, often around 3 to 5 sentences or about 50-100 words, to maintain readability and engagement.
From the given options, "4 sentences" and "5 sentences" are common practices for clarity and pacing in narrative writing. Thus, it can be said that the preferable count is typically around 4 to 5 sentences per paragraph rather than a strict word limit.