D) For oft, when on my couch I lie
In vacant or in pensive mood,
They flash upon that inward eye
Which is the bliss of solitude;
And then my heart with pleasure fills
First, you have to summarize what is happening in the story. A country mouse invites his city mouse friend to his fields for dinner. The city mouse does not enjoy his dinner, so he invites the country mouse to his house. They cannot eat because they are constantly in danger.
C is right because even thought he did a lot that is what he mostly did.
The principle of rhetoric is mainly to persuade and impress and the style can be grandiloquent, grandiose, flowery or extravagant for example. It can be helpful to say introduce a speaker who has a very good education, who is very knowledgeable, very experienced, has excellent judgement and yet is modest for example and the above words could be used to praise him or her to give the audience a good impression of the person.
