Which of the following is true about constitutions?

they establish the fundamental principles for a government.
they establish all the procedures by which a government should achieve its aims they need to be written.
they tend to be very precise in their language.

They establish the fundamental principles for a government.

Explanation:

They establish the fundamental principles of government.

Explanation:

A constitution is a set of basic principles or decisions constituting a public entity's moral justification, organization or other types of entity, and widely defines how well the organization should be regulated.

When these concepts are translated in just one file or collection of legal documentation, they can be said to represent a written constitution. Many constitutions (such as the UK) are not codified but are contained in a variety of constitutional acts of the parliament, court proceedings or agreements.