According to the Declaration, ways in which the King denied the colonists "life, liberty and the pursuit of happiness" is that he did not allow them to make their own laws, he did not allow the colonists to trade with other parts of the world and he kept standing armies amongst them in times of peace without their consent.
Sample response: By blocking their ability to pass laws, the king limited the colonists' liberty. By punishing and killing those who disagreed with him, he violated their unalienable rights.
