💡 Detailed Explanation
"～に伴って" (ni tomonatte) is used to express that as one change occurs, another change happens along with it. The diversification of working styles is a change that occurred alongside the introduction of the new system, making this the most appropriate choice. "～をめぐって" indicates the center of a conflict or discussion. "～ものとして" indicates an assumption or premise. "～からには" expresses strong determination or a natural consequence.