What safety measure should flight attendants consider during turbulence caused by wind?

The correct answer emphasizes the importance of ensuring that seatbelts are fastened during turbulence caused by wind. This safety measure is crucial because turbulence can lead to unexpected jolts and drops in altitude, which can pose a risk of injury to passengers who are not secured in their seats. By making sure that all passengers have their seatbelts fastened, flight attendants help to minimize the risk of injuries caused by sudden movements in the cabin.

In contrast, serving snacks or beverages is not advisable during turbulence, as these activities can distract from safety measures and may lead to spills or additional hazards. Conducting safety briefings is typically done before takeoff or in preparation for possible emergencies, rather than specifically during turbulence, where immediate safety actions take precedence. Thus, the focus on securing seatbelts directly addresses the immediate dangers posed during turbulent conditions and ensures passenger safety.