<span>Choice (a) is correct. To make an amendment to the Articles, all 13 states had to agree. This made amendments particularly difficult: any one state could derail the entire process. This is why the Articles failed after such a short time, to be replaced by the current Constitution.</span>
The Declaration begins with a short introductory statement called the Preamble that explains the reason for the document, which is to "declare the causes" that have created the need for the colonies to "dissolve the political bands" with England and reinvent itself as an independent nation.
The second section begins with a list of "truths" that the persons being represented by the Declaration consider to be "self-evident." This list sets out rights, or ends, that all people should expect to be granted and states the rights people have when those rights are not honored.
It think it is C because it was something very difficult to battle :)