Which sentence should be revised to have a formal style and objective language?

hello! i hope this you,

literary elements are the essential parts needed to tell any story; they include theme, conflict, characterization, setting, style, and tone. characterization is used by authors to make characters come to life by either describing or highlighting characters traits. characterization is certainly one major literary element harper lee ties to key coming-of-age scenes in the novel to kill a mockingbird and develop her coming-of-age theme.throughout the novel, all three of the major child characters

because you can no longer feel the bubbles or hear the waves.

i think it is a conjuction because it is definitly not a preposition