What type of transition is best for elaboration in writing?

The best choice for elaboration in writing is "moreover." This transition word effectively signals that additional information is being provided that builds upon or reinforces a previous statement. When writing, elaboration often involves expanding on an idea by adding details, examples, or further explanation. "Moreover" establishes a clear link between successive sentences or sections, indicating that what follows is not just related but adds depth and support to the previous point.

In contrast, "meanwhile" is typically used to discuss events that happen at the same time but doesn't inherently suggest elaboration on a single topic. "Subsequently" denotes a sequence of events and implies that one action follows another without necessarily adding depth to the ideas presented. "Conversely" indicates opposition or contrast between two ideas, which is not suited for elaboration but rather for presenting differing viewpoints or alternatives. Thus, "moreover" is the most effective choice for elaborating on a point in writing.