Answer:
a) construction of tall buildings
Explanation:
Since the buildings during this time period were being built bigger and bigger there was more demand for elevators so people could get from floor to floor. Hope this helped :)
The reason why the boy's father doesn't tell the boy to leave is : C. The father is unconsciousI think it's pretty much self-explanatory. No father will let danger come to his son if he can help it
C I hope it help if not I’m really really sorry
Is A - the flashcards - you can use them in any place and you can learn much more easier
