I would think the answer is B, hope i could help. :)
Answer: I think the answer is C
Explanation:
Throughout the story it said that she and her mother were afraid of heights and she had to get over her fear to save Jessie
Something necessary or indeipensable: food shelter, and other necessities of life. The fact of being necessary or indispensable; indispensability: the necessity of adequate housing.
After killing her husband, she put on an act. She started crying and sulking when the police were at the house examining the body. Her actions made the investigators assume that she did not do it.