Answer:
c. an image.
Step-by-step explanation:
To visualize, following the Latin roots of the word, means to see something with your mind´s eye, speaking metaphorically. It literally means to make something visual, to turn something into an image so that you can analyze, study, and reflect upon this image. This is not only a great memory aid, it can also help a lot when creating an argument for objects or things that would remain obscure otherwise.