Which BPMN gateway allows only one path to be taken?

• A. One or more paths can be taken; represented by a diamond with a circle inside
• B. Only one path can be taken; represented by a diamond with an X
• C. Paths that can occur at the same time; represented by a diamond with a plus sign
• D. Used to connect artifacts in a BPMN diagram

Answer: (B)

In BPMN, gateways control how the flow splits or rejoins. The one that allows only a single path to proceed is the exclusive gateway, shown as a diamond with an X inside. It checks the conditions on the outgoing sequence flows and ensures that at most one path is taken; typically one condition evaluates to true (or a default path is chosen if no conditions match). The other visuals reflect different behavior: a diamond with a circle means an inclusive gateway where one or more paths can be taken; a diamond with a plus sign indicates a parallel gateway where all paths are taken in parallel; and a choice describing connections to artifacts isn’t a gateway at all.