Double variations appear during the Second movement of the Beethoven's Fifth Symphony.
Answer:
3. Using antibiotics the wrong way is making them not work as well.
Explanation:
Since the main point of this text is about how people misuse antibiotics and how they can not work, I'm guessing that this answer is the fittest for this piece of text.
B. Using a certain object as a main focus and outing things around it can make out brain understand that that is that main point of the building and that that is the center