The correct statement that assesses Bishop Donatus's reaction when Emperor Constantine recommended forgiveness from the church officials who were not protecting the church's integrity is:
D. Donatus and his followers did not agree with Constantine's assessment and moved to the northern part of Africa.
This reflects the historical context in which Donatus and his followers were critical of the perceived moral failings of the church leadership and opted to distance themselves from the official church, advocating for a purer form of Christianity.