What should the Flight Deck do in response to expected turbulence?

When turbulence is anticipated, it's essential for the flight deck crew to communicate effectively with the flight attendants. Advising the flight attendants about the expected turbulence and its duration is crucial for several reasons.

Firstly, informing the cabin crew allows them to prepare adequately for the situation, ensuring that they can secure the cabin and advise passengers to fasten their seatbelts. This communication contributes to the safety and comfort of everyone on board, as flight attendants can manage the cabin environment proactively.

Additionally, understanding the expected duration of the turbulence helps the flight attendants gauge how to handle service interruptions, prepare passengers, and ensure that everyone remains safe during the turbulent period. This readiness and proactive management are key to maintaining order and responding appropriately to any passenger needs during turbulent conditions.

The other responses do not directly address the need for safety and communication in handling turbulence as effectively as the correct choice does.