Answer:
Correct answer is He declared the colonies to be in rebellion.
Step-by-step explanation:
He declared the colonies to be in rebellion is the correct answer because King George didn't even read it, but declared on August 23, 1775 that colonies have started a rebellion against the Crown. Petition was sent after first hostiles between two sides, as a last attempt to prevent further damage. King George didn't wanted to hear about it.
That is why all other options are totally wrong.