What are some common weather considerations for glider pilots?

Wind direction, thermal activity, temperature inversions, and cloud formations are indeed critical weather considerations for glider pilots. Understanding wind direction helps pilots to optimize their takeoff and landing approaches and to navigate during the flight. Proper assessment of thermal activity is essential, as gliders rely on rising columns of warm air (thermals) for altitude gain. Additionally, pilots must be aware of temperature inversions, which can affect thermal conditions and may trap heat and haze below. Cloud formations are indicators of atmospheric conditions, including potential lift or turbulence, and can serve as navigational aids.

While other options mention various weather factors, they may not be as directly relevant to the specific needs of glider pilots. For example, visibility and precipitation are important for general flight safety, but they do not specifically inform the glider pilot's ability to find lift. Humidity levels can influence thermal conditions, but they are secondary to the direct impacts of wind and thermal activity. The other options also include relevant weather factors like jet streams and turbulence, which can affect overall flight safety, but they are less critical in the everyday operations of a glider compared to the considerations presented in the correct option.