Which statement is true about the topics and settings of these texts?

i guess the cause and effect would show how being around the smoke(the cause) can have negative effects on the body.

explanation:

the anwser is went creeping down the river again, across the wide lonely marshes to the sea.

i longed to go with them out into the world to seek my fortune in foreign lands—africa, india, china and peru!

and, dreaming of the lands i had never seen, i'd sit on there, watching till they were out of sight.

the answer is academic paper

and the second should be college professor