How was the constitution written as a flexible framework of government?

This question is framed with with a duality of Words that mean the same thing. One is stretching, and the other is bending. First, I would have to question your instructor to clarify the redundancy of the question at hand. Essentially they mean the same thing.

Your best bet would be to clarify the question from your instructor first, and following you should probably try studying simplified documents that explain the three branches of government, along with check with the U.S. Constitution articles in how a system of checks and balances were established. If you do this, it would help you answer the question. To give you the answer is complicated because I don't know what material you are working on. You'd be better studying and forming an opinion, as if you use the answer from a person on a forum, it is plagiarism.

Good luck!