¿Cómo se esquematiza un cómic?

In picassos masterpeice bulls head which bicycle part makes up the bulls horn

Sarah and juan were running in the school track meet. the muscles in their arms and legs them run fast. other muscles that you cannot see were also at work. the most important muscles for this track meet were the muscles in their a) arms. b) eye. c) feet. d) heart.

What types of visual art mediums are heavily based on observation?