The correct answer is option 'C' - because his heart was changed with Edla’s kindness.

Explanation:
The story "The Rattrap" by Selma Lagerlöf revolves around a peddler who is a thief and a tramp. He steals money from a farmer and is on the run. He knocks on the door of a small cottage in search of shelter, pretending to be a tinker. The kind-hearted young woman, Edla, allows him to stay overnight and treats him with kindness and respect, despite his disheveled appearance.

The peddler is surprised by Edla's hospitality and her genuine concern for his well-being. This act of kindness touches him deeply and makes him reflect on his own actions and behavior. He realizes that he has been living a life of deceit and dishonesty, constantly pursued by the fear of being caught.

As the peddler spends the evening with Edla and her family, he experiences a sense of belonging and warmth that he has not felt in a long time. He begins to see the beauty in small acts of kindness and the joy that can be found in genuine human connections.

When the peddler discovers the stolen money in his pocket, he is faced with a choice. He could have chosen to keep the money and continue living his life as a thief, but Edla's kindness has had a profound impact on him. He realizes that he no longer wants to live a life filled with fear and deception.

In a moment of clarity and transformation, the peddler decides to leave the stolen money in a rattrap, symbolizing his desire to break free from the trap of his own dishonesty. He wants to start afresh and embrace a life of honesty and redemption.

By leaving the stolen money behind, the peddler not only demonstrates his changed heart but also acknowledges the power of kindness and compassion in changing a person's perspective. Edla's act of kindness becomes a catalyst for the peddler's transformation, showing that genuine care and compassion can have a profound impact on even the most hardened individuals.

In conclusion, the peddler leaves the stolen money in a rattrap because his encounter with Edla's kindness has touched his heart and inspired him to change his ways.