Answer:
Lucid dreaming
Step-by-step explanation:
Farrah tells her friend that while dreaming that she was flying an airplane she became aware that it was a dream and started guiding the dream by having the airplane fly upside down. This example illustrates lucid dreaming.
Lucid dreaming is psychological phenomenon in which the dreamer becomes aware of the dream he is dreaming and is able to rear the dream in whichever direction he pleases. It is a state where the person is asleep but also aware of his dream.