Which statement about Visual Workflow versions is true?

• A. Apex code is required to activate a flow
• B. Flow versions do not affect activation
• C. Only one version of a flow can be activated at a time
• D. Multiple versions can be activated simultaneously

Answer: (C)

Visual Workflows (Flows) support versioning, but only one version can be active at a time. You can create multiple versions to test or update a flow, and the active version is the one that runs when the flow is invoked. Activating a new version automatically makes it the current active one and deactivates the previous active version, so you cannot have several versions activated simultaneously. Activation is done through the Flow Builder/Setup UI—no Apex code is required. So the statement that only one version can be activated at a time is the correct one.