This question is about the "Letter from Birmingham Jail" written by Martin Luther King Jr.
It is an open letter in defense to their staged nonviolent resistant to racism. His reasons for staging the resistance were the following
1) He and his staff were invited to be present and support the resistance. He was a part of an organization that has an affiliate in Birmingham.
2) He is not an outsider of Birmingham because he is still a citizen of the United States of America.
3) It is his duty as a human being to stand up for what is right and protect the rights of others in times of injustice and discrimination.
Earth is the only planet in the solar system were living organisms are found. Not only that earth also consists of air,water,soil and land which are the most important elements for living organisms to survive. The temperature of earth is also favourable for living.As a whole living is possible in the earth so it is different from other planets in solar system.
C. Integrity is the answer
read a book, watch a documentary etc.