A source is a(n)
an author can use to research and develop ideas in an informational text

autobiographical paper
outside publication
personal opinion
social network

Outside publication

Explanation:

Sources are outside information that must be cited and given credit to, otherwise this becomes plagiarism.

 Outside publication

Edg 2020

to me i think class room sitting education is better. i do online school and i have not learned a think haha. when i sit in the classroom i just sit there and kind of pay attention but still i get so far ahead in the class when im doing online i have nothing else better to do but play video games and i sit in school and learn and have friends and just actually learn. when i'm doing online i sit here listing to music and get on and and look up the answers i guess that is my fault for being a cheater. but to be honest i think sitting in the classroom is better.

the answer would be c   i believe thats the most reasonable answer