Hello. Your question is incomplete, which makes it difficult for it to be answered accurately. However, I will try to help you in the best way possible
When you are writing a text, the topic and the purpose are two important elements that you must define before starting the research. The topic of a text is the main theme to which it refers, while the purpose is the author's objective in relation to the text and what he intends to achieve with it.
They are all part of earth's layers.
Is there an all of the above? I guess if I had to answer, i would say A. Grest battles
