Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to think like a scientist [title] Ask questions. [step] The first step in the scientific method is formulating a question. Make some observation of the world around you, and pose it as a question.

Ending1: You will then use the scientific method to investigate the question and attempt to answer it. [substeps] The scientific method can be applied to all sorts of questions, for example, you could ask " will i save money if i stop shopping at store a and buy my groceries at store b instead? " [title] Do some background research. Ending2: For instance, " where is the planet located? What is the radiation rating of the planet? " or " where are the inhabitants? " [substeps] Research helps develop your knowledge as you research. You can look into class size questions, like " what is the atmosphere like? " or " what has changed about this world? " research can take multiple forms, for instance. Ending3: Are you an expert at botany? Experts are scientists who have knowledge of the history or past of their environment. They are able to think critically about the environment, and develop a specific theory without needing facts. Ending4: Rather than just saying, " what is the competitive environment like today? " you have to figure out what's going on in that world and try to find out what works and doesn't. This will get some big ideas in before you can eventually formulate something to answer back to yourself.

Answer format: ending1/ending2/ending3/ending4