Answer: Option (b) is the correct answer.
Step-by-step explanation:
It is known that an atom has protons, neutrons and electrons as subatomic particles.
Protons and neutrons are placed inside nucleus of an atom whereas electrons revolve around the nucleus.
Therefore, when a spinning airplane propeller is compared with a spinning electron then it means the propeller also moves in circular motion with a high speed.
Therefore, we cannot tell the exact location of propeller at any given moment in time.