Question

The essential elements for building a skyscraper are metal beams and

Answer 1

the answer would be girders

Step-by-step explanation:

edge

Answer 2

Some of the essential elements include fireproofing materials, elevators, intricate plumbing, central heat, lighting, and complex ventilation systems.

Explanation:

if the dude above took the answer he would've known that this wasn't "pick the correct choice shown from A B C D". it was "write ur option in the box below".