Final answer:
The word "hauling" in the poem implies that the father's work is demanding, referring to a task that is labor-intensive and strenuous.
Step-by-step explanation:
In line 9, the word "hauling" within the context of the poem suggests that the speaker's father's work is demanding. Hauling typically implies a task that requires physical effort and can be strenuous, indicating a sense of hard work. It does not connote feelings of coldness, disappointment, or gloominess, but rather a labor-intensive activity that one has to undertake despite any difficulties faced.