I think the correct answer from the choices listed above is option B. An example of gene therapy is when a defective gene is replaced with a normal gene. Gene therapy is a technique used in order to treat or prevent diseases. Hope this answers the question.
Answer:
Flu
Explanation:
That's called a flu shot.
Blood is responsible for transportation of Oxygen in body which is the part of Cardiovascular system.
therefore, correct choice is :
- D.) Cardiovascular system
The body in tone and strengthens the muscles