Step 1: Identify each book–author pair
Check the correctness of each given pair based on known publications. Step 2: Verify the pairs
(A) \textit{H is for Hope} is correctly associated with Elizabeth Kolbert.
(B) \textit{Beautiful Days} is not written by Zach Williams — this pairing is incorrect.
(C) \textit{Martyr} is correctly written by Kaveh Akbar.
(D) \textit{Meditations for Mortals} is correctly matched with Tom Baldwin. Step 3: Conclusion
Since option (B) is the only incorrectly matched pair, it is the correct answer.