Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to draw an animal cell [title] Draw a simple circle or oval for the cell membrane. [step] The cell membrane of an animal cell is not a perfect circle. You can make the circle misshapen or oblong.

Ending1: The important part is that it does not have any sharp edges. Also know that the membrane is not a rigid cell wall like in plant cells. Ending2: The simple shape makes it easy to write. [title] Draw a straight line on the cell membrane. Ending3: [substeps] A simple circle would be enough for an animal cell to fit inside, but avoid squashing the cell membrane downward into your drawing to make it harder for insects or vermin to climb up. At a minimum, you will have to create a separate corner for the cell membrane. Ending4: [title] Use 2 by 2 pixels to use the marker. [step] The radius of the circle that you use will be the length of the cell membrane.

Answer format: ending1/ending2/ending3/ending4