his thought's of mangan's sister prompt him to romanticize mundane chores.
Explanation:
The text shows how the narrator's actions are modified with the influence of the sensations he has when thinking about Mangan's sister. These thoughts interfere with the narrator's thinking so strongly that small daily tasks are romanticized by him and become something beautiful, poetic.
Even a simple trip to the market makes the narrator think of something that can be found in several romantic poems. This is seen in the underlined phrase, where the narrator goes to the market and all the noise makes him feel like carrying a chalice through a crowd of enemies.
