Lars observes a substances to be solid and to float in water at room temperature 23 based on the given properties, which substances is the most likely identity of this sample

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.