In samuel taylor coleridge's "sonnet to the river otter," the speaker's "fondest
sighs" at the thought of the river where he spent time as a child show that he feels
confident about handling "manhood's cares"
joyful at his memories of childhood
concerned for the river's polluted condition
bittersweet with longing for simpler times

the answer to "what does the narrator realize by the end of the story" is b.

#1  sara was always tasked with selecting birthday presents for her friends and family because everyone admired her  impeccable taste. 

impeccable (adj): perfect, flawless

#2  they moved to the united states many years ago, but their  insular  attitudes made it difficult for them to socialize. 

insular (adj): isolated; separate

#3  the professor explained the  semantic  relationship between the two nouns used in the sentence. 

semantic (adj): related to words or the meanings of words 

happy to : )