...What is the word in italics?
I'm assuming by the options and context clues, the word is "ponderous"
It should be heavy, because ponderous means with a lot of weight(basically).
If it was sharp why would she pick it up? If it was slippery, why would she make her neighbor pick it up? If it was too heavy for her to remove, she would go get help from her neighbor.
So yeah, your answer is C, heavy.