One theory of dreaming is that it is a by-product of going through what happened to us during the day. This theory is: a) latent processing theory b) information processing theory c) Freudian theory d) REM processing
This theory, which talks about that during sleeping we will often dream of things which have happened to use during the day would be the latent processing theory - A.
None of the other apply. The information processing theory is more of a paradigm which referrs to all cognitive functioning as information processing.