Final answer:
The PFD annunciations are displayed as yellow parameter labels with a double-headed arrow above on the Primary Flight Display.
Step-by-step explanation:
The subject of this question is Computers and Technology and the grade level is High School.
The PFD (Primary Flight Display) is a critical instrument in aviation that provides important information to pilots.
Annunciations on the PFD are displayed as yellow parameter labels with a double-headed arrow above. These annunciations indicate various parameters such as altitude, airspeed, heading, and engine information.