Option 1 -> Incorrectly matches "A Thousand Splendid Sons" with Mulk Raj Anand and "Coolie" with Khaled Hosseini.
Option 2 -> Incorrectly matches "A Bend in the River" with Mulk Raj Anand, which is wrong as it's V.S. Naipaul's work.
Option 3 -> Multiple incorrect matches including "A Bend in the River" with Mulk Raj Anand and "Coolie" with Toni Morrison.
Option 4 -> Correctly matches all books: "A Bend in the River" by V.S. Naipaul, "A Mercy" by Toni Morrison, "A Thousand Splendid Suns" by Khaled Hosseini, and "Coolie" by Mulk Raj Anand.
Hence, Option 4: (A) - (II), (B) - (III), (C) - (IV), (D) - (I) -> This correctly pairs all four renowned works with their respective authors: V.S. Naipaul's post-colonial masterpiece, Toni Morrison's historical novel, Khaled Hosseini's Afghan narrative, and Mulk Raj Anand's social realist work about Indian poverty -> correct