Question

what is the principal function of a written constitution?
resolving disagreements between competing parties
declaring the independence of a state
outlining the structure and powers of a government
confirming resistance to civil disobedience

Explanation:

A written constitution's core role is to establish the framework of a government, defining its branches, their powers, and limits. Resolving disagreements is a secondary legal function, declaring independence is a one-time act (not a principal function), and confirming resistance to civil disobedience is unrelated to a constitution's purpose. Thus, outlining government structure and powers is the principal function.

Answer:

outlining the structure and powers of a government