If I would have to make a good guess, I would choose A. 
        
                    
             
        
        
        
Answer:
The answer is double helix.
Explanation:
In its natural state, each DNA molecule is actually composed of two single strands held together along their length with hydrogen bonds between the bases. Watson and Crick proposed that the DNA is made up of two strands that are twisted around each other to form a right-handed helix, called a double helix.
Hope this helps!! ;)
 
        
                    
             
        
        
        
Answer: cauliflower
Explanation: i just did it on savvas
 
        
             
        
        
        
Answer:
Both flowers and runners help a plant to reproduce.
Explanation:
Both flowers and runners help a plant to reproduce. While a flower help in sexual reproduction, a runner helps in asexual reproduction.
A flower has both male and female gamete at one place. When the pollen grains with in a flower reaches the female ovary, a new seed is produced  which has the potential to develop into new plant. In case of runner (which is a stem), the tip of the stem has the potential to grow into a new plant