Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to create a coconut volcano [title] Choose a space that is easy to clean. [step] This is a messy project so find an area that can cope with getting a little messy, or work in an area that can be covered thoroughly with newspaper (such as the kitchen counter or table). You can skip the messy newspaper if you do the experiment outside on gravel.

Ending1: [title] Test the environment and recheck for cleanliness, once you have settled on a place that will be easy to clean. [step] The ideal temperature range is 65 degrees fahrenheit, and in a temperate region , 70 degrees celsius. Ending2: [title] Spread the sand in an even layer on the tarp. [step] Making sure everything is flat is essential. Ending3: [substeps] Another suggestion is to do it in the bathtub (during a bathtime is even better since the lava will start to change the color of the bath water). [title] Put some baking soda in a small cup. Ending4: If you do get messy (such as in the driveway) go over this area with a garden hoe and a garden hose. [title] Cut shapes out of newspaper or florist paper (including straws).

Answer format: ending1/ending2/ending3/ending4