3. when the declaration of independence says that unalienable rights are "endowed by their creator," it means those rights are guaranteed by the constitution written into law established by legislation and court rulings absolute and cannot be surrendere

When the Declaration of Independence says that unalienable rights are "endowed by their Creator," it means those rights are Inalienable.

Explanation:

Declaration of confederation affirmed that people are born with some incontrovertible rights.  

The forerunners believed God and they were religious and conventional. Some rights are divinely imposed and they believed that no earthly power can deny them. So no government can reject theses rights.  

They also believed that whenever any government became tyrannical and despotic, the common people had all rights to alter or abolish the existing government through protests can depose the government and help in bringing out a new government.