The correct answer is B, inadequate.
The nymph says that IF we didn't grow old, and IF shepherd's always told the truth, THEN "these pretty pleasures might me move."
However, the promises made by the shepherd are inadequate. They will not say young forever and shepherd's do not always tell the truth. She needs more than the promise of flowers and songs. His offers are not enough to make her decide to go live with him and be his love.
She is not insulted by his words, but she realizes what he offers is not enough. She regards the shepherd's offer of love as inadequate. Therefore, the correct answer is B.
The eerie mood is created initially because of the subject matter of the poem. The character of Death is introduced in the first stanza, and since the 'd' is capitalized, it's clear that Dickinson is personifying death into an actual person. Thinking about Death in this way, as someone who stops to pick you up and having to get into his carriage to take the ride away from life is creepy in itself. This eeriness is supported when she uses the line "The dews grew quivering and chill." The words quivering and chill help to strengthen the eeriness that the subject matter creates. She also refers to the setting sun, which again helps give the poem an overall spooky feeling.
The answer is D; extremely thin as a result of starvation
The theme is to not underestimate the abilities of something or someone based on its size. This is because the lion thought he was superior to the mouse, until one day the mouse was able to rescue him.