8) A tool or strategy to enhance an author's style is called a _ _ _ _ _ _ _ _ device.

literary

Explanation:

The definition of literary device is a technique a writer uses to produce a special effect in their writing.

in june, we will have been married for eighteen months. (i am assuming this is what you want? the sentence, as you have presented it, is grammatically incorrect--   you want it corrected, yes? )

i believe the answer is inference