What does the Hazardous Inflight Weather Advisory Service (HIWAS) continuously broadcast over selected VORs?

The correct response presents the elements that are included in the Hazardous Inflight Weather Advisory Service (HIWAS). HIWAS is designed to provide pilots with vital weather information that could impact their flight safety. It continuously broadcasts important advisories such as SIGMETs (Significant Meteorological Information) and AIRMETs (Airmen's Meteorological Information), which alert pilots to significant weather conditions affecting aviation safety, including turbulence, icing, and thunderstorms.

In this context, HIWAS provides these critical weather advisories, which inform pilots about hazardous weather conditions that may be in their flight path or that could affect flight safety. The absence of additional components like severe weather forecast alerts and center weather advisories in the correct response focuses on the essentials that HIWAS is specifically tasked with distributing.

The other choices mention a wider range of advisories, some of which are not included in the HIWAS broadcasts. For instance, specific advisories such as Wind Shear Advisories or Radar Weather Reports could be broadcasted via different channels but are not the primary focus of HIWAS. Therefore, the correct answer emphasizes the core advisories that HIWAS typically broadcasts, which are crucial for in-flight decision-making.