Answer: dID YOU forget to add them?
Explanation:
The answer is option B: The vacant stare and the look of terror that had followed.
In the passage from "The Story of an Hour," by Kate Chopin, it is not necessary to separate the subject with two elements with a comma - the vacant stare and the look of terror.
Options A, C and D are incorrect because they contain a misplaced comma.
Al should be your answer. hope that helped!