Which rhetorical technique is the speaker using?

1) technical language (writen technical volcabulary)

2) ordinary langauge

3) literary language (because it's text with a rich, descriptive vocabulary)

4) scientific texts (includes texts such as medical reports, legal texts, academic journals, etc)

5) informational texts (texts that are used to convey information to readers, such as technical guides, costumer guides, textbooks)

6) poetic texts. because they are essays, short stories, poems, etc.

is it "means of nourishment"

#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 : )

c) vampires in history and modern life.