Dr Cowell Conducts a Study of Reading Speed

Dr Cowell conducts a study of reading speed. This is accomplished by measuring the rate at which participants' eyes move when reading a book section. His results find that their eyes move faster when reading familiar words, but that they slow down when reading unfamiliar words. This provides evidence that the process of reading is based

A) only on top-down processing.
B) both on top-down and bottom-up processing.
C) only on bottom-up processing.
D) on neither top-down nor bottom-up processing.