Option b is the correct answer. Samadhi Maran, also known as sallekhana, refers to the intentional acceptance of death by individuals, whether they are householders or ascetics, when they anticipate that the end of their life is imminent due to factors such as advanced age, incurable illness, or severe famine. This practice is considered a supplementary vow within the moral guidelines of Jainism and involves a voluntary fasting unto death, achieved by progressively reducing food intake.