Answer:
Step-by-step explanation:
1. you must do some research from reliable sources to double check the information.
2/3. myths usually have a certain purpose or takeaway that they want the reader to remember. this is a lesson or moral. for example the story of pandoras box (image below) it is bascially stressing that if you dont listen to what others warn you OR if you are too curios about something that causes you to poke your nose in places it aint suppoed to be then nothing good will come from it. common myths also have unrealistic people, creatures, situations, etc. then it will be clear the story is a myth and not reality, like greek myths. they contain many gods and creatures but there greek gods and beasts do not really exist. (i just realized i kind of mixed questions 2 and 3 so you can pull apart this paragraph to your discretion).
4. reliable sources could be the library where information is reviewed and checked so that the publisher know they arent publishing a book with false information. another source is the internet of course but specifially the websites that you just know have a good reputation for accurate sources and the ones that end in .gov, .edu, all that stuff.
5. basically many sources must be reviewed. the more the sources, you can really see which information is consistent to lead you to the right answers. if you look at one or two sources you arent really making sure the information is correct or comparing it to other sources. also by looking at more information you are finding out more and more things, which is good becasue now you have more information to decide if the story is myth or reality.
made many typos and did not capitilize letter, sorry my computer didnt wanna do it for some reason so just make sure to fix alll that.
also you can elaborae on #1 i relaized i didnt write much. and attached is a sotry from pandoras box, a greek myth to go with one of the answers i wrote.