Step 1: Understanding the Concept:
This question requires arranging major national events/policies of India in chronological order, from earliest to latest.
Step 2: Detailed Explanation:
Let's find the year of occurrence for each event:
(D) Economic Liberalization: A series of major economic reforms in India was initiated in 1991.
(C) Right to Information Act: The RTI Act was passed by the Parliament of India on 15 June 2005 and came fully into force on 12 October 2005.
(B) Mars Orbiter Mission (Mangalyaan): The mission was launched on 5 November 2013 by ISRO.
(A) Swachh Bharat Abhiyaan: This nationwide cleanliness campaign was officially launched on 2 October 2014.
The chronological order is 1991 \(\rightarrow\) 2005 \(\rightarrow\) 2013 \(\rightarrow\) 2014.
This corresponds to the sequence (D), (C), (B), (A).
Step 3: Final Answer:
The correct chronological order of the events is (D), (C), (B), (A).