Option 1 -> Han Kang is a South Korean author who won the 2024 Nobel Prize in Literature, not the Peace Prize.
Option 2 -> Gary Ruvkun is an American geneticist who won the 2024 Nobel Prize in Physiology or Medicine for discovery of microRNA.
Option 3 -> John H. Hopfield is an American scientist who won the 2024 Nobel Prize in Physics for foundational work in machine learning.
Option 4 -> Nihon Hidankyo is a Japanese grassroots organization of atomic bomb survivors from Hiroshima and Nagasaki.
Hence, Option 4: Nihon Hidankyo -> This organization was awarded the 2024 Nobel Peace Prize for their decades-long efforts to achieve a world free of nuclear weapons and for bearing witness through survivor testimonies that nuclear weapons must never be used again -> correct