The answer is C: should not be obeyed.
Explanation for each option:
A. Must be followed - This is incorrect. Martin Luther King Jr., in his writings, particularly in "Letter from Birmingham Jail," argues that individuals have a moral responsibility to disobey unjust laws. He distinguishes between just and unjust laws, suggesting that unjust laws degrade human personality and are not in harmony with moral law.
B. Celebrate the human spirit - This is incorrect. Unjust laws do not celebrate the human spirit; rather, they suppress it. King argues that unjust laws are often used to oppress and dehumanize individuals, which is contrary to the celebration of the human spirit.
C. Should not be obeyed - This is correct. King believes that unjust laws are not aligned with moral law and therefore should not be obeyed. He advocates for civil disobedience as a way to protest and bring attention to such laws, emphasizing that breaking an unjust law in a nonviolent manner can be a form of respect for the law by highlighting its injustice.
D. Promote sameness - This is incorrect. While unjust laws may attempt to enforce conformity or sameness, King does not argue that this is a positive aspect. Instead, he views unjust laws as tools of oppression that stifle individuality and justice.