What best describes the central theme of Martin Luther King’s “Letter from Birmingham Jail” is people have a moral obligation to disobey unjust laws.
Explanation:
The principal theme of “Letter from Birmingham Jail” by Martin Luther King refers to justice, and he mentions it several times, for example "Injustice anywhere is a threat to justice everywhere." these kind of expression call people to stand up and fight against any form of injustice in order to have a better society for all.
