Why does the phrase "Luis no se preocupa POR los demás" use por instead of para? Would it not be para because it is his opinion??

Ou will hear a story in spanish. it’s rather lengthy. as you listen to the story, take notes on scrap paper.listen a second time, and as you listen, make your notes more complete. in english, summarize thestory in a composition of between ten and twenty sentences. print or type the final version of your summaryin the appropriate location on the answer sheet provided at the back of this study unit. do not sendany scrap paper or notes to the school