Answer:
I would think of the old like cave paintings of the stick people and animals.
Explanation:
 
        
                    
             
        
        
        
The Answer is c I hope this helps.
        
                    
             
        
        
        
First one to third and second to forth
        
             
        
        
        
Good job it’s really nice
        
                    
             
        
        
        
A skeletal frame constructed in a regular pattern to support the floors, roof, or walls. A steel frame is made up of vertical steel columns and horizontal I-beams