Final answer:
References to 'Injustice anywhere is a threat to justice everywhere,' the biblical story of the Good Samaritan, and Gandhi's nonviolent resistance are most suited to King's clerical audience, as they reflect religious and ethical concerns and models of peaceful change.
Step-by-step explanation:
The passage chosen by Martin Luther King, Jr. in his "Letter from a Birmingham Jail" is designed to resonate with the clergymen to whom he is writing. References such as "Injustice anywhere is a threat to justice everywhere" and the allusion to the biblical story of the Good Samaritan are tailored to the audience's ethical and religious sensibilities. Meanwhile, the mention of Gandhi's nonviolent resistance alludes to a well-respected example of successful change without violence, which aligns with the principles many clergymen would uphold.
In contrast, while the reference to Shakespeare's Hamlet might be recognized and appreciated for its literary value, it may not have the same level of direct relevance to the audience's responsibilities to address social injustices as the other examples. Therefore, references A, B, and C are especially well suited to King's audience of fellow clergymen for their clear connections to justice, ethics, and nonviolent approaches.