Either B or C, can't remember
The underlined pronoun <em>who </em>is used as a D) subject in this sentence. The subject is the doer of the action, the one who left mittens on the ground, in this case.
Answer:B
It helps the reader interpret the irony of the setting.
Explanation:
Hi! Are you answering your own question? I am confused, do we have to answer anything?