Final answer:
Tituba is described as knowing that "trouble in this house eventually lands on her back" due to prejudice during the Salem witch trials.
Step-by-step explanation:
The author, Arthur Miller, describes Tituba as knowing that "trouble in this house eventually lands on her back" because of prejudice. During the Salem witch trials, Tituba, being a West Indian servant, was an easy target for suspicion and blame. The Puritan society had strong biases against people who were different, such as Tituba, and perceived them as a threat. Therefore, Tituba knew that trouble would always be directed towards her due to the prevailing prejudice of the time.