I'd say it's D) Indirect object, but I'm not sure, so don't take my word as gospel :)
A document praising the favoured warrior of the king
The correct answer is D. There is a change in mood from the quatrains to the final couplet. This is common in the English sonnet that the final couplet is used to change the mood and add new meaning to what was previously said, thus being a sort of a peak for the sonnet.
