I think it's C. Most of the times. Green was representing nature/God.
Atticus does not pretend to be better than anyone. He is not racist and does not put on airs. He raises his children with the same standards that he raises himself with. Other people in the town make up long lies that they blame on others, using race as a key part.
Answer:
Because it's human nature.
Explanation:
A grudge may arise from many human emotions. Jealously, sadness, anger...etc. When we get over one, it allows us to heal and when we don't, it can turn worse. For example, your really close friend forgot your birthday and now you have a grudge against them because you are hurt, angry and sad. They were your friend! but you feel betrayed and thus, you hold a grudge against them and once solved, you'll either get closer to your friend or have a damaged freindship.
Source: https://www.psychologytoday.com/us/blog/fulfillment-any-age/201710/why-people-hold-grudges-and-what-do-about-them