The correct answer is option 4, Jataka-tales. The Jataka-tales are a collection of stories that depict the previous lives of the Buddha, Siddhartha Gautama. These tales showcase moral lessons and teach about the virtues and qualities that the Buddha acquired in his journey towards enlightenment. They highlight the Buddha`s compassion, wisdom, and selflessness. The Jataka-tales are an important part of Buddhist literature and are often recounted as inspiring narratives to guide followers on the path to enlightenment. It is essential to note that the Tripitakas, option 1, are the sacred texts of Buddhism that comprise the teachings of the Buddha, while options 2 and 3, Triratnas and Panchatantra tales, are not directly related to the stories of the Buddha`s birth and previous lives.