Question

what is the purpose of constitutional amendments?
to update the constitution

to introduce economic reform

to build national alliances

Explanation:

Constitutional amendments are formal changes made to a constitution to adjust its provisions, reflecting evolving societal needs, correcting flaws, or updating rules—their core purpose is to modify (update) the constitution itself. The other options are not primary: economic reform is a policy area, and building alliances relates to foreign relations, neither of which defines the purpose of amendments.

Answer:

to update the Constitution