Which are the three types of inflight weather advisories?

The three types of inflight weather advisories are SIGMET, Convective SIGMET, and AIRMET, making the selected answer correct.

SIGMETs are issued to warn pilots of significant weather conditions that can affect the safety of aircraft in flight, such as severe turbulence, icing, or volcanic ash. Convective SIGMETs specifically address hazardous weather related to convective activity, including thunderstorms and associated phenomena that can pose serious risks during flight. AIRMETs (Airmen’s Meteorological Information) are utilized to alert pilots to weather conditions that may not be severe enough to warrant a SIGMET but still may affect aircraft and operations, such as moderate turbulence, IFR conditions, or light icing.

Other options contain different types of aviation weather reports or forecasts, but they do not accurately comprise the three standard inflight weather advisories recognized by aviation authorities. TAF (Terminal Aerodrome Forecast) and METAR (Meteorological Aerodrome Report), while essential for flight operations, serve different purposes than the advisories specifically intended to alert pilots during flight.