Concept:A constitution that demands special steps to change its provisions is classified by how easy or difficult it is to amend.
Explanation:When a constitution requires specific statutory procedures for amendment, those procedures are usually more complex than passing an ordinary law.
Examples include needing a two-thirds majority, a referendum, or approval by different levels of government.
Because these special requirements make the constitution difficult to alter quickly, such a constitution is described as rigid.
This is different from a flexible constitution, which can be amended through the same simple process used for regular legislation.
Answer:D. rigid