The cyclops effort to move the stone is compared to a simple task, showing his strength.
Helen Gray is self-centered and vain. She is shallow and cold. The poet suggests that behaving in a humble manner is a better way than behaving like Helen Gray.
P.S. - Next time, post the poem along with your question. It was a real inconvenience having to look it up.
C and E
explanation: it sounds like it makes sense