Step 1: Conceptual Grasp:
The task is to associate renowned Indian literary works with their authors.
Step 2: Elaboration:
- (A) Ramayana: The ancient Sanskrit epic is conventionally attributed to sage (IV) Valmiki.
- (B) Geetanjali: This poetry collection, "Gitanjali: Song Offerings," earned (I) Rabindranath Tagore the Nobel Prize in Literature in 1913.
- (C) Mahabharata: The other significant Sanskrit epic from ancient India is traditionally credited to (II) Vyasa.
- (D) Astapadi: 'Astapadi' denotes the lyrical pieces within the Gita Govinda, a 12th-century creation by poet (III) Jayadev.
Step 3: Conclusion:
The accurate pairings are: (A)-(IV), (B)-(I), (C)-(II), (D)-(III).