Im pretty sure it is B, i hope it helps if it is B
<span>Alfred Adler claimed all of the following influenced one's personality except sexual conflicts.
Whether you are born before or after your siblings can be quite important and have a strong effect on your psyche, as well as if your parents neglect you and you feel inferior. However, your sexual conflicts will not affect your personality much - you won't be changed in a drastic way due to those conflicts about your sexuality.
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The answer to this question is B. Elevators
One of the reason why skyscrapers were not popular before the invention of elevators was that it took too much energy to move from the groud floor to the upper floor with the stairs alone.
After the invention of elevators, we eliminate this problem and people could move from ground floor to upper floor with only little effort.