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 :)
Connotations can be fixed or subjective.
Connotations are the emotions that we associate with a given word. While most of the time, these are fixed (i.e. some words arouse pleasure while others contempt), they can be subjective. (i.e. for someone who is afraid of dogs, the word dog can imply danger, whereas for someone who loves dogs, the word can be a source of comfort and pleasure).
The answer is;
a short story normally does not have a complicated plot; a novel can have a complicated plot.
hope this helps, God bless!