Scientific method
Create a hypothesis  one possible answer to the question. A hypothesis in science is a word meaning "An educated guess about how something works". It should be possible to prove it right or wrong. For example, a statement like "Blue is a better color than green" is not a scientific hypothesis. It cannot be proved right or wrong. "More people like the color blue than green" could be a scientific hypothesis, because one could ask many people whether they like blue more than green and come up with an answer one way or the other.