Final answer:
A short-story writer must concentrate on a few outstanding character traits in each important character. (True)
Step-by-step explanation:
A short-story writer must concentrate on a few outstanding character traits in each important character.
This statement is True.
In a short story, the author has limited space to develop characters, so they must focus on a few key traits that define each important character. By emphasizing these traits, the author can create more memorable and impactful characters within the constraints of a shorter narrative.