People were looking for new forms of entertainment as mediums like the radio gained popularity :)
First one is static
Second one is round
Third one is flat
Last one is dynamic
The answer is : monocular depth
Monocular depth affect the perception that is held by an individual on<u> how far an object is located based on how big</u> the object look like in that individual's vision.
When the driver cross the railroad, the driver most likely thought that the train is still located far away form him/her because it looks small in the driver's perception. He misjudge it and caused the crash in the end.
Answer:
by not giving me your number
Explanation: