What Was Perhaps the Most Conservative Shift of the Roberts

What was perhaps the most conservative shift of the Roberts Court?

A) The Court took on notably fewer cases than before, reversing the tendency to use the Court at a back-up legislature.
B) The Court ruled conservatively on abortion cases, whereas the previous Court tended to rule on the pro-choice side.
C) Roberts and colleagues seemed more heavily influenced by outside opinion, lessening the Court's ostensible objectivity.
D) Despite its liberal rulings on gun control, the Court ruled conservatively on gay rights and immigration issues.