The correct option is B.
The change shows that the national constitution is flexible and open to amendments when the situations for such arise. Certain things can be added to the constitution when the need arise at the same time, something may be removed from it; it all depends on what is happening per time.
To declare the rights and liberties of subjects.
Mongol tribes invading Muslim lands.
They believed that removal would help them avoid encroaching settlers.
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