light and transient causes, English homework help

But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.”
The theme of this passage from the Declaration of Independence is best described as:
A.experience shows suffering
B.new governments provide security
C.long-term governments should not be changed lightly
D.discomfort can be endured, but abuse will not tolerated