In the surfeit of power I was a murderer and an oppressor . In my most evil moments I was convinced that I was doing good , and I was well supplied with systematic arguments . It was only when I lay there on rotting prison straw that I sensed within myself the first stirrings of good . Gradually it was disclosed to me that the line separating good and evil passes not through states , nor between classes , nor between political parties either - but right through every human heart - and through all human hearts ... .
Why did being imprisoned prompt the speaker to reflect on and realize the true nature of morality ?
Pick the best answer from the following options:
A. They had a cellmate who encouraged them to take a good hard look at their past conduct
B. They spent much time praying to god and had a vision outlining what they had done wrong
C. The prison offered a spirituality course that allowed them to think about the philosophy of the matter
D. The incarceration gave them time to sit in silence and reflect on their past transgressions


D