Respuesta :
Letter C would be correct. And passing through the other options:
A blueprint, mentioned in letter A, is a list of topics to be covered by the writter in order to prove a thesis. It should not only help the reader to follow the development of ideas, but also guide their author when writting.
Although coming before the actual writting, it is not a prewirting technique.
Both letter B and D can be answered by the following: There is a very common prewriting strategy used by professinoal journalists before writing a story, the 5W's and 1 H: Who?; What?; Where?; When?; Why? and How?.
It's a very powerful technique to develop a great deal of information about a topic very quickly.