What are the phrases "labouring swain," "sheltered cot," and "mirthful band" examples of? ?

The phrases could belong to the   style used  in Poetic diction.The style uses figurative language and vocabulary that normally appears in metaphors used in verse.Poetic diction adds duty to any poem .It was first used by William Wordsworth who wanted the language in poetry to be different from that of the ordinary man.He wanted phrases written this way to have a special effect on the reader.

the answer is d. she became an english professor at university of georgia.