Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to draw a model of the digestive system [title] Start by drawing an outline of a person. [step] You only need to draw the head and torso. Make sure you are using a pencil rather than a pen so that you can erase if necessary.

Ending1: [title] Sketch in for the legs, hands and feet. [step] About half of the time, your model will start out with the feet, but start on the mostly sketched in design of the legs and feet (optional). Ending2: [title] Know that this step is based on previous drawings you put in the drawing until now. [step] Try to make as accurate a picture of you as possible so the model is looking at you. Ending3: This outline should take up most of space on your paper. Draw the head in proportion to the body as it would be on a human. Ending4: Make the shape proportional to where the eye sockets were. [title] Make the size of the body from point a to point b.

Answer format: ending1/ending2/ending3/ending4