Concept:A constitution that is difficult to amend because of a complicated procedure is called a rigid constitution.
Explanation:A rigid constitution has a special and lengthy amendment process.
It requires more than just an ordinary majority in the legislature.
Sometimes it needs a special majority, a referendum, or approval by different levels of government.
This makes changes slow and difficult.
A flexible constitution, on the other hand, can be changed easily through the normal law-making process.
So, the constitution described in the question is rigid.
Answer:A. Rigid