Final answer:
The main problem in this story is that A) Ben is trapped in an elevator and is being tormented by a bully.
Step-by-step explanation:
The main problem in this story is that Ben is trapped in an elevator and is unable to escape. Additionally, he is being tormented by a bully from school who is repeatedly texting him, creating a sense of fear and unease.
This situation adds to the tension and urgency of the story as Ben tries to find a way out and navigate the challenges he faces.