Option c is the correct answer. In Jainism, self-mortification is seen as a way to cleanse the soul and achieve liberation. There are many different forms of self-mortification practiced by Jains, including fasting, wearing rough clothing, and sleeping on the ground. In Buddhism, self-mortification is not seen as a necessary or effective way to achieve liberation. Instead, Buddhists focus on developing wisdom and compassion through meditation and other practices.