Concept:The speaker is expressing pity and regret at the sight of someone being deceived by love.
Explanation:The speaker says, "Her dotage now I do begin to pity."
This shows he feels sorrow for the woman's foolish infatuation.
He also describes how he "upbraided her" and "fell out with her" after seeing her crown the "hateful fool" with flowers.
These words show sadness and concern, not blame toward himself, praise, or personal enjoyment.
Thus, he is lamenting the pitiable sight before him.
Answer:D. lamenting the sight