Requirements. You are expected to meet the requirements as they are stated—no more and no less. You must do exactly what is stated in the requirements. If it says “show or demonstrate,” that is what you must do. Just telling about it isn’t enough. The same thing holds true for such words as “make,” “list,” “in the field,” and “collect,” “identify,” and “label.” ("Merit Badges")
Use the following link to access the up-to-date requirements for merit badges: https://www.scouting.org/programs/scouts-bsa/advancement-and-awards/merit-badges/