Answer:
It allows the reader to get to know each character.
Step-by-step explanation:
The third-person point of view is used to provide readers with information and details about the characters in general, not focusing on one character only. Thus, O. Henry's third person point of view in "After Twenty Years" is intended to relate to the two main characters, who have not seen each other in a long time.
The rest of the choices are incorrect because the first option is associated with the first-person point of view; the second alternative does not make sense; and the last one can refer to the first-person or third-person limited narration.