Answer:
D). Their strict and strong opposition to slavery.
Explanation:
Salzburgers vary from the Malcontents during the Trustee era of Georgian history in their 'stern and strong resistance to slavery.' Salzburgers found slavery to be disgraceful and offensive against the principals of christianity. While the Malcontents perpetuated slavery for moving on with their plantation works and ammass huge land for these plantations. Thus, both of them were contradictory in their attitude towards slavery. The former strictly opposed it while the latter propagated it despite holding the prohibitions. Thus, option D is the correct answer.