Words: etymology: :
literature: history
life: biology
insects: entomology
humans: anthropology

Except for "literature: history" all other options can complete the diagram.

Explanation:

Etymology is a study of the origin and evolution of words. For this reason "words: etymology" means that "words" are studied in "etymology", so in order to complete the diagram, we need to find other words that establish this same relation.

"life: biology" establishes this relationship because biology studies life, so this option could complete the diagram.  Also could complete the diagram the sentences "insects: entomology" and "humans: anthropology", since the entomology is the science that studies the insects; and anthropology is the science that studies humanity, humans.

However, history is not the science that studies literature. For this reason the sentence "literature: history" could not complete the diagram.

consonance, it has the repetition of the consonants in stressed syllables with different vowel sounds.

the answer is b, it brings the reader closer to the action.

it would've been a if the word had been determined, not conceited

hope this

-ironwolfx