I have link to passage, just help please :(

What is the author’s main purpose in the text?

A
to argue that humans are capable of acting unselfishly altruistic towards others
B
to prove that people can be altruistic for a rewarding feeling, without being selfish
C
to explore the origins of altruism and how “pure” altruism has developed over time
D
to show how altruism is actually an essential part of human survival

the answer would be, she updates her online profiles regularly and participates in work-related online discussions.

they both lost a woman they loved named lenore

they believed they interracted with a talking raven

they became orphaned at a young age.

the correct answer is "the rhythm and rhyme scheme add to an eerie and suspenseful tone". poetry is literature written in stanzas and lines that use rhythm to express feelings and ideas. poets will pay particular attention to the length, placement, and grouping of lines and stanzas. this is called form. lines or whole stanzas can be rearranged in order to create a specific effect on the reader.