Answer:
A. She was lonely and unaware of the danger of strangers.
Step-by-step explanation:
We know for a fact that Elisa is lonely, as this is one of the main themes of the story. Part of the reason why she feels this way is because the house is located in Salinas Valley, an isolated area. Moreover, because of her loneliness and the location, Elisa was probably unaware of the danger of strangers.