The correct answer is: Parliament had passed laws the colonists considered unfair.
The Olive Branch Petition was sent to King George III in 1775 as an attempt to avoid a full-blown war after the American colonies had already begun to rebel against British policies. The colonists sought to convey their grievances and express a desire for peace, but they believed that the king was more sympathetic to their cause than Parliament, which had enacted various laws that the colonists viewed as oppressive.