खालील अहवाल लक्षात घेऊन कालक्रमानुसार त्यांचा योग्य क्रम लिहा.
(a) पॉल एच. अॅपलबी अहवाल - I
(b) ए.डी. गोरवाला अहवाल
(c) संथानाम समिती अहवाल
(d) प्रशासकीय सुधारणा आयोग अहवाल
पर्यायी उत्तरे :

The correct answer is Option B ((b), (a), (c), (d)).

Key Points:
• Chronology of Major Administrative Reform Reports in India:
• A.D. Gorwala Report [(b)]: Submitted in 1951 ('Report on Public Administration' commissioned by the Planning Commission).
• Paul H. Appleby Report - I [(a)]: Submitted in 1953 ('Public Administration in India: Report of a Survey', which led to the creation of IIPA and O&M divisions).
• Santhanam Committee Report [(c)]: Committee on Prevention of Corruption headed by K. Santhanam was set up in 1962 and submitted its final landmark report in 1964 (led to CVC).
• First Administrative Reforms Commission Report [(d)]: Set up in 1966 under Morarji Desai / K. Hanumanthaiah, it submitted its 20 comprehensive reports between 1966 and 1970.
• Correct sequence: (b) 1951 -> (a) 1953 -> (c) 1964 -> (d) 1966-70.
• Key Takeaway: Administrative reports timeline: Gorwala (1951) -> Appleby-I (1953) -> Santhanam (1964) -> First ARC (1966-70).