Organism and organ system
        
                    
             
        
        
        
Answer:
Vascular tissue includes xylem, phloem, parenchyma, and cambium cells.
 
        
             
        
        
        
I believe the ratio of C to H to O in simple sugars or monosaccharides are 1 C : 2 H : 1 O or 1:2:1.
        
             
        
        
        
I think all of them provide strong evidence, but the best would probably be the last one. 
Hope this helps