The answer would be the second option. The best reason for doing more background research after making an observation and before forming a hypothesis is to prevent making the same mistakes made in a prior experiment. It is to make sure that you are able to see the problems of a research and make an experimental design that will minimize the errors.
I think it's D. Sry if you get it wrong though
Answer:
2) DNA Makes Up Our Body Structure Like Muscle
Explanation:
There Are Pairs In Our DNA That Determine Certain Physical Features Or Traits. ( These Are Called Gene's ) The Genes That You Have In Your Body Right Now, Makes Up Your Genotype. This Genotype Then Determines Your Physical Appearance, Which Is Called Your Phenotype!
One theory that is most used in the Emergency room is Faye's Abdellah's theory. It defines nursing as a service to an individual as well as to the families and society. It identifies 21 nursing problems that would guide the nurse as to the prioritization of the client's needs.