1) to save time and money
2) to avoid mistakes that could result in a poor product
3) to maintain the standards and uniformity of a product
creating clear procedural texts can ensure that your workers will obey, saving time and money. creating clear procedural texts can guarantee your workers will avoid making mistakes that could result in poor products because they will understand the rules and guidelines if they read a clear procedural text. This supports the third option as well. 
 
        
             
        
        
        
The answer is my. It is "describing" the flowers and saying that the flowers are mine. 
I, her, and everyone are pronouns that function as a noun phrase. They do/receive the action, while my is "describing" the flowers.
        
                    
             
        
        
        
An phrase ends in -ing and functions as a noun is verbals