Some problems that might occur is that you might forget some schedules, cause there is going to be several schedules, or you might forget something, etc.
The misplaced modifer is in answer C: She called for help at the top of her voice, not the corner.
Answer:
There must be a story behind all these pls post the story
A topic is the main idea of a writing. In this case, the topic of the essay is Yellowstone National Park because the essay talks about the national park itself.