The third and longest part of the Declaration was

The third and longest part of the Declaration was complaints against was the king and parliament.

Explanation:

the protestant reformation's started in 1517, disturbing the religious and political order in europe´s catholic countries. the outcome was the european wars of religion prosecuted in europe in the 16th, 17th and part of the 18th century. nonetheless, uprisings, territorial disputes, and great power conflicts were also causes of the wars.  

the answer is d. party organizers, volunteers, voters and elected officials.