The answer is: A. collecting data
During this process , researchers would use their observational skills and record every notable occurrence that happen to the variables. 
The focus on this process is simply to add all relevant data without making any analyzation. That process come later on after the researchers started to change the variables in order to see whether it would create a correlation.
 
        
                    
             
        
        
        
I only know this so far-
4 elements 
Nitrogen (N)
Hydrogen (H)
Sulfur (S)
Oxygen (O)
        
                    
             
        
        
        
Answer:
Explanation:
Yes. They both have a cell membrane. They have many organelles that animal cells have and a cell membrane is one of the few similarities.
 
        
                    
             
        
        
        
The answer is -lA support scripture and creation