Explanation:

All of the above is correct.
The constitution of the India is the lengthiest of all the written constitutions of the world. It is a very comprehensive, elaborate and detailed account. The original constitution contained a preamble, 395 Articles (22 parts) and 8 schedules. The various amendments carried out since 1951 have deleted about 20 Articles and part VII and added about 4 parts and 4 schedules (9,10,11,12). No other constitution in the world has so many articles and schedules.

The following factors have contributed to the bulkiness of our constitution.

i) Incorporation of the accumulated experience of different constitutions

ii) Detailed administrative provisions

iii) Peculiarity of the problems to be solved

iv) Inclusion of the Constitution of the units and special provisions for some of these units

v) Elaborate federal relations

vi) Inclusion of justiciable and non-justiciable rights and fundamental duties