The little engineer in me decided that I needed to launch off of something and I suggested the basement stairs . Bobby did n't say anything as I decided the appropriate height for lift - off . Standing on the landing , three steps above the cement floor , I turned to Bobby . " On the count of three , we 'll both jump . " glimpse the feeling of having my feet unglued from the earth , but I raised my arms as I had seen my superhero do on our little black and white television , bent my knees and sprung forward with enough force to clear the bottom two stairs .

Question: why did they want to jump ?
Answer: because they raised their armsbecause of the appropriate height for lift - off .for the excitementNone of the above choices .