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.
Answer:I will gladly love to help you but what can I improve you with.
Explanation:
The parent cannot produce an offspring with blood type 'o' because you can have a or b passed on so any answer with that in it will work
