Since i couldn't find this one i got it wrong, so i'm gonna post it here. what is the main purpose of this excerpt of the document?

when in the course of human event, it becomes necessary for one people to dissolve the political bands which have connected them with another... a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.

a. to catalog the crimes against the colonies of which the british crown is guily
b. to seek the approval of the world in the court of public opinion
c. to announce the decision of the colonies to sever their ties to england
d. to introduce the declaration of independence to the general public

CORRECT ANSWER IS C.