What does this quotation from introduction of the declaration of independence do

It explains the document.

Explanation:

It explains what the rest of the document will do. This excerpt from the preamble of the Declaration of Independence clearly shows what the document is going to be about. This is evident from the portion that states "a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.

on edg the answer is A - It explains what the rest of the document will do.

my cultural heritage consists of irish, german, native american, and others.

d)to gain support for the independence movement.

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