Please help me this is on Reading Plus

Ifound this on google “use commas to separate two or more coordinate adjectives that describe the same noun. be sure never to add an extra comma between the final adjective and the noun itself or to use commas with non-coordinate adjectives.” i hope this you for what your looking for

Best thing to do, reread whatever you are writing on, and highlight things that are scientific or anecdotal. then pick which ever is easiest for you