Final-Answer:
The correct answer to Part A is: Each group has a sun goddess, but her specific story is different for each group.
The correct answer to Part B is: A northern Aboriginal tale is about the sun goddess they call Wala, who traveled across the sky each day.
The article states that "Aboriginal Australians have many different creation myths, but they all share some common elements. One of these elements is the sun goddess." The article then goes on to describe the stories of several different sun goddesses, including Bila, Yhi, and Wala. Each of these stories is different, but they all share the common element of a sun goddess who is responsible for bringing light to the world.
The evidence from the text that best supports the answer to Part A is : "A northern Aboriginal tale is about the sun goddess they call Wala, who traveled across the sky each day." This sentence shows that different Aboriginal groups have different stories about the sun goddess, but they all agree that there is a sun goddess who is responsible for bringing light to the world.