I think it’s A. Leadership
        
                    
             
        
        
        
<em>Shift </em>selects multiple worksheets at the same time. <em>Ctrl</em> selects all that you selected with Ctrl pressed.
 
        
             
        
        
        
Answer:
computer architecture is a set of rules and methods that describe the functionality, organization, and implementation of computer systems. The architecture of a system refers to its structure in terms of separately specified components of that system and their interrelationships.