Final answer:
Mme. Defarge is unsympathetic in 'A Tale of Two Cities' due to her lack of empathy, personal losses, and involvement in plotting against the revolutionaries.
Step-by-step explanation:
In the novel 'A Tale of Two Cities' by Charles Dickens, Mme. Defarge is depicted as unsympathetic for several reasons. Firstly, she has no empathy for anyone, as she is driven by a desire for revenge against the aristocracy.
Secondly, she has suffered significant personal losses, particularly the death of her sister, which fuels her anger and lack of sympathy. Lastly, she is actively involved in plotting to overthrow the revolutionaries, further highlighting her lack of sympathy.