I think A is the best possible answer for this question.
Answer:
Tax money is funding a violent, unjust war.
The crime that the state is committing is worse than the crime of withholding taxes.
Acts of civil disobedience such as withholding taxes are preferable to violent protest.
I believe it is the last blue sentence
Jem wants to make sure that Atticus can't hear his disrespect. Jem wants to preserve his perfect relationship with his father.
