Vaccines are injected into the bloodstream :)
Answer:I think it’s b I could be wrong
Explanation:
Ans: Option (B) Mitosis
DNA replication occurs just before the process of cell division, which is also called mitosis.
Mitosis is when the cell is being divided into two, and this is when DNA starts to replicate and it produces more and more cells and the process continues. In other words, mitosis<span> is a part of the cell cycle when replicated chromosomes are separated into two new nuclei. Before that process(mitosis), DNA replication occurs. Hence the correct option is (B) Mitosis.</span>
The correct answer is C. biological theory.
Biology deals with the inner workings of our body - so, if something is the result of hormones and other physiological processes, then it will definitely be related to biology. The other options have more to do with the environment, rather than with the body itself.