खालीलपैकी कोणते/कोणती विधान/विधाने बरोबर आहेत?
अ. भारताचे नियोजन हे लोकशाही प्रकारचे नियोजन होय.
ब. सैद्धांतिकदृष्टया प्रादेशिक नियोजन सर्वप्रथम अमेरिकेत सुरू झाले.
क. मोहन धारिया सरकती योजनेदरम्यान नियोजन आयोगाचे अध्यक्ष होते.
ड. सरकती योजनेचे वैशिष्ट्य म्हणजे हा नियोजनाचा लवचिक प्रकार होता.

The correct answer is Option C (a, b and d).

Key Points:
• Evaluating the planning statements:
• Statement 'a' is correct (India adopted democratic socialist planning).
• Statement 'b' is correct (Regional planning historically originated in the USA with Tennessee Valley Authority in 1933).
• Statement 'c' is INCORRECT (Morarji Desai was Prime Minister and ex-officio Chairman of the Planning Commission during the Rolling Plan 1978-80; Mohan Dharia was Union Minister).
• Statement 'd' is correct (The Rolling Plan concept by Gunnar Myrdal is characterized by flexibility).
• Hence, 'a, b and d' (Option 3) are correct.
• Key Takeaway: Rolling Plan (1978-80): Flexible plan concept by Gunnar Myrdal; PM Morarji Desai was Planning Commission Chairman.